diff --git a/apps/web/components/task-create-dialog-defaults.test.ts b/apps/web/components/task-create-dialog-defaults.test.ts
index 39d53e1f90..4d569ae842 100644
--- a/apps/web/components/task-create-dialog-defaults.test.ts
+++ b/apps/web/components/task-create-dialog-defaults.test.ts
@@ -1,13 +1,161 @@
 import { describe, expect, it } from "vitest";
-import { computeSingleWorkflowFallbackId } from "./task-create-dialog-defaults";
+import * as taskCreateDefaults from "./task-create-dialog-defaults";
+
+const { computeDialogDefaultStepId, computeSingleWorkflowFallbackId } = taskCreateDefaults;
+const HIDDEN_WORKFLOW_ID = "improve-kandev";
+const VISIBLE_WORKFLOW_ID = "visible";
+const VISIBLE_START_STEP_ID = "visible-start";
+
+type WorkflowContextResolver = (
+  workflowId: string | null,
+  defaultStepId: string | null,
+  workflows: Array<{ id: string; hidden?: boolean }>,
+  allowHiddenWorkflow: boolean,
+) => { workflowId: string | null; defaultStepId: string | null };
 
 describe("computeSingleWorkflowFallbackId", () => {
   it("selects the sole visible workflow when hidden workflows are also loaded", () => {
     const workflowId = computeSingleWorkflowFallbackId(null, null, [
       { id: "kanban", hidden: false },
-      { id: "improve-kandev", hidden: true },
+      { id: HIDDEN_WORKFLOW_ID, hidden: true },
     ]);
 
     expect(workflowId).toBe("kanban");
   });
 });
+
+describe("resolveTaskCreateWorkflowContext", () => {
+  it.each([
+    {
+      name: "drops an unlocked hidden workflow inherited from task context",
+      workflowId: HIDDEN_WORKFLOW_ID,
+      defaultStepId: "improve",
+      allowHiddenWorkflow: false,
+      expected: { workflowId: null, defaultStepId: null },
+    },
+    {
+      name: "preserves a locked hidden workflow from a feature wrapper",
+      workflowId: HIDDEN_WORKFLOW_ID,
+      defaultStepId: "improve",
+      allowHiddenWorkflow: true,
+      expected: { workflowId: HIDDEN_WORKFLOW_ID, defaultStepId: "improve" },
+    },
+    {
+      name: "preserves an ordinary visible workflow",
+      workflowId: "kanban",
+      defaultStepId: "backlog",
+      allowHiddenWorkflow: false,
+      expected: { workflowId: "kanban", defaultStepId: "backlog" },
+    },
+    {
+      name: "drops unlocked workflow context whose metadata cannot be resolved",
+      workflowId: "not-yet-loaded",
+      defaultStepId: "start",
+      allowHiddenWorkflow: false,
+      expected: { workflowId: null, defaultStepId: null },
+    },
+  ])("$name", ({ workflowId, defaultStepId, allowHiddenWorkflow, expected }) => {
+    const resolver = (
+      taskCreateDefaults as typeof taskCreateDefaults & {
+        resolveTaskCreateWorkflowContext?: WorkflowContextResolver;
+      }
+    ).resolveTaskCreateWorkflowContext;
+
+    expect(resolver).toBeTypeOf("function");
+    if (!resolver) return;
+
+    expect(
+      resolver(
+        workflowId,
+        defaultStepId,
+        [
+          { id: "kanban", hidden: false },
+          { id: HIDDEN_WORKFLOW_ID, hidden: true },
+        ],
+        allowHiddenWorkflow,
+      ),
+    ).toEqual(expected);
+  });
+});
+
+describe("computeDialogDefaultStepId", () => {
+  it("uses the fetched start step when visible fallback replaces hidden context", () => {
+    expect(
+      computeDialogDefaultStepId({
+        selectedWorkflowId: null,
+        workflowId: null,
+        fetchedSteps: [
+          {
+            id: "visible-backlog",
+            title: "Backlog",
+            workflowId: VISIBLE_WORKFLOW_ID,
+            position: 0,
+          },
+          {
+            id: VISIBLE_START_STEP_ID,
+            title: "In Progress",
+            workflowId: VISIBLE_WORKFLOW_ID,
+            position: 1,
+            is_start_step: true,
+          },
+        ],
+        defaultStepId: null,
+        effectiveWorkflowId: VISIBLE_WORKFLOW_ID,
+        snapshots: {},
+      }),
+    ).toBe(VISIBLE_START_STEP_ID);
+  });
+
+  it("ignores fetched steps from a previously selected workflow", () => {
+    expect(
+      computeDialogDefaultStepId({
+        selectedWorkflowId: VISIBLE_WORKFLOW_ID,
+        workflowId: null,
+        fetchedSteps: [
+          {
+            id: "previous-start",
+            title: "Previous start",
+            is_start_step: true,
+            workflowId: "previous",
+          },
+        ],
+        defaultStepId: null,
+        effectiveWorkflowId: VISIBLE_WORKFLOW_ID,
+        snapshots: {
+          [VISIBLE_WORKFLOW_ID]: {
+            workflowId: VISIBLE_WORKFLOW_ID,
+            workflowName: "Visible",
+            steps: [
+              {
+                id: VISIBLE_START_STEP_ID,
+                title: "Visible start",
+                color: "green",
+                position: 0,
+                is_start_step: true,
+              },
+            ],
+            tasks: [],
+          },
+        },
+      }),
+    ).toBe(VISIBLE_START_STEP_ID);
+  });
+});
+
+describe("resolveTaskCreateWorkflowContext visibility defaults", () => {
+  it("treats a workflow with omitted hidden metadata as visible", () => {
+    const resolver = (
+      taskCreateDefaults as typeof taskCreateDefaults & {
+        resolveTaskCreateWorkflowContext?: WorkflowContextResolver;
+      }
+    ).resolveTaskCreateWorkflowContext;
+
+    expect(resolver).toBeTypeOf("function");
+    if (!resolver) return;
+
+    expect(resolver("legacy", "start", [{ id: "legacy" }], false)).toEqual({
+      workflowId: "legacy",
+      defaultStepId: "start",
+    });
+  });
+});
diff --git a/apps/web/components/task-create-dialog-defaults.ts b/apps/web/components/task-create-dialog-defaults.ts
index 157e0f2959..57eba502d2 100644
--- a/apps/web/components/task-create-dialog-defaults.ts
+++ b/apps/web/components/task-create-dialog-defaults.ts
@@ -1,6 +1,19 @@
 import type { DialogComputedArgs, StepType } from "@/components/task-create-dialog-types";
 import { computeEffectiveStepId } from "@/components/task-create-dialog-helpers";
 
+export function resolveTaskCreateWorkflowContext(
+  workflowId: string | null,
+  defaultStepId: string | null,
+  workflows: Array<{ id: string; hidden?: boolean }>,
+  allowHiddenWorkflow: boolean,
+): { workflowId: string | null; defaultStepId: string | null } {
+  const workflow = workflows.find((item) => item.id === workflowId);
+  if (allowHiddenWorkflow || !workflowId || (workflow && !workflow.hidden)) {
+    return { workflowId, defaultStepId };
+  }
+  return { workflowId: null, defaultStepId: null };
+}
+
 export function computeSingleWorkflowFallbackId(
   selectedWorkflowId: string | null,
   workflowId: string | null,
@@ -39,11 +52,31 @@ export function computeDialogDefaultStepId({
   effectiveWorkflowId,
   snapshots,
 }: ComputeDialogDefaultStepIdArgs): string | null {
+  const matchingFetchedSteps = fetchedSteps?.filter(
+    (step) => step.workflowId === effectiveWorkflowId,
+  );
+  if (effectiveWorkflowId && effectiveWorkflowId !== workflowId) {
+    const fetchedStartStep = matchingFetchedSteps?.find((step) => step.is_start_step);
+    const fetchedFirstStep = matchingFetchedSteps
+      ? [...matchingFetchedSteps].sort((a, b) => (a.position ?? 0) - (b.position ?? 0))[0]
+      : null;
+    return (
+      fetchedStartStep?.id ??
+      fetchedFirstStep?.id ??
+      computeSnapshotDefaultStepId(effectiveWorkflowId, snapshots)
+    );
+  }
+
   const switchedWorkflowWithoutFetchedSteps =
-    Boolean(selectedWorkflowId) && selectedWorkflowId !== workflowId && !fetchedSteps;
+    Boolean(selectedWorkflowId) && selectedWorkflowId !== workflowId && !matchingFetchedSteps;
   const computedStepId = switchedWorkflowWithoutFetchedSteps
     ? null
-    : computeEffectiveStepId(selectedWorkflowId, workflowId, fetchedSteps, defaultStepId);
+    : computeEffectiveStepId(
+        selectedWorkflowId,
+        workflowId,
+        matchingFetchedSteps ?? null,
+        defaultStepId,
+      );
 
   return computedStepId ?? computeSnapshotDefaultStepId(effectiveWorkflowId, snapshots);
 }
diff --git a/apps/web/components/task-create-dialog-effects.test.ts b/apps/web/components/task-create-dialog-effects.test.ts
index 1c377e3e2c..a9f27f0620 100644
--- a/apps/web/components/task-create-dialog-effects.test.ts
+++ b/apps/web/components/task-create-dialog-effects.test.ts
@@ -3,12 +3,20 @@ import { renderHook, waitFor } from "@testing-library/react";
 import {
   useDefaultSelectionsEffect,
   useWorkflowAgentProfileEffect,
+  useWorkflowStepsEffect,
 } from "./task-create-dialog-effects";
 import { decideAgentProfileAutopick } from "./task-create-dialog-autopick";
 import type { DialogFormState, StoreSelections } from "@/components/task-create-dialog-types";
 import type { AgentProfileOption } from "@/lib/state/slices";
 import type { Workspace } from "@/lib/types/http";
 const STORAGE_KEYS = { LAST_AGENT_PROFILE_ID: "kandev.dialog.lastAgentProfileId" } as const;
+const workflowApiMocks = vi.hoisted(() => ({
+  listWorkflowSteps: vi.fn(),
+}));
+
+vi.mock("@/lib/api/domains/workflow-api", () => ({
+  listWorkflowSteps: workflowApiMocks.listWorkflowSteps,
+}));
 
 // Minimal fake of DialogFormState - the hook destructures only three fields,
 // so the rest can be undefined behind an `as` cast and never read.
@@ -45,6 +53,85 @@ function makeProfile(id: string): AgentProfileOption {
 
 beforeEach(() => {
   localStorage.clear();
+  workflowApiMocks.listWorkflowSteps.mockReset();
+});
+
+describe("useWorkflowStepsEffect", () => {
+  it("loads the visible fallback steps when hidden task context was removed", async () => {
+    workflowApiMocks.listWorkflowSteps.mockResolvedValue({
+      steps: [
+        {
+          id: "visible-backlog",
+          workflow_id: "visible",
+          name: "Backlog",
+          position: 0,
+          is_start_step: false,
+        },
+        {
+          id: "visible-start",
+          workflow_id: "visible",
+          name: "In Progress",
+          position: 1,
+          is_start_step: true,
+        },
+      ],
+      total: 2,
+    });
+    const setFetchedSteps = vi.fn();
+    const fs = {
+      selectedWorkflowId: null,
+      setFetchedSteps,
+    } as unknown as DialogFormState;
+
+    renderHook(() => useWorkflowStepsEffect(fs, true, null, "visible"));
+
+    await waitFor(() => expect(workflowApiMocks.listWorkflowSteps).toHaveBeenCalledWith("visible"));
+    await waitFor(() =>
+      expect(setFetchedSteps).toHaveBeenCalledWith([
+        {
+          id: "visible-backlog",
+          title: "Backlog",
+          position: 0,
+          is_start_step: false,
+          events: undefined,
+          workflowId: "visible",
+        },
+        {
+          id: "visible-start",
+          title: "In Progress",
+          position: 1,
+          is_start_step: true,
+          events: undefined,
+          workflowId: "visible",
+        },
+      ]),
+    );
+  });
+
+  it("clears stale steps and retries the visible fallback when the dialog reopens", async () => {
+    workflowApiMocks.listWorkflowSteps.mockRejectedValueOnce(new Error("temporary failure"));
+    workflowApiMocks.listWorkflowSteps.mockResolvedValueOnce({ steps: [], total: 0 });
+    const setFetchedSteps = vi.fn();
+    const fs = {
+      selectedWorkflowId: null,
+      setFetchedSteps,
+    } as unknown as DialogFormState;
+
+    const { rerender } = renderHook(
+      ({ open }) => useWorkflowStepsEffect(fs, open, null, "visible"),
+      { initialProps: { open: true } },
+    );
+
+    await waitFor(() => expect(workflowApiMocks.listWorkflowSteps).toHaveBeenCalledTimes(1));
+    await waitFor(() => expect(setFetchedSteps).toHaveBeenCalledWith(null));
+
+    rerender({ open: false });
+    rerender({ open: true });
+
+    await waitFor(() => expect(workflowApiMocks.listWorkflowSteps).toHaveBeenCalledTimes(2));
+    expect(workflowApiMocks.listWorkflowSteps).toHaveBeenNthCalledWith(2, "visible");
+    await waitFor(() => expect(setFetchedSteps).toHaveBeenLastCalledWith([]));
+  });
 });
 
 describe("useWorkflowAgentProfileEffect", () => {
diff --git a/apps/web/components/task-create-dialog-effects.ts b/apps/web/components/task-create-dialog-effects.ts
index 9f0de81e03..62d2fa54db 100644
--- a/apps/web/components/task-create-dialog-effects.ts
+++ b/apps/web/components/task-create-dialog-effects.ts
@@ -30,19 +30,33 @@ export { decideAgentProfileAutopick } from "@/components/task-create-dialog-auto
 
 const selectionDebug = createDebugLogger("task-create:selection");
 
-export function useWorkflowStepsEffect(fs: DialogFormState, workflowId: string | null) {
-  const { selectedWorkflowId, setFetchedSteps } = fs;
+export function useWorkflowStepsEffect(
+  fs: DialogFormState,
+  open: boolean,
+  workflowId: string | null,
+  effectiveWorkflowId: string | null,
+) {
+  const { setFetchedSteps } = fs;
   useEffect(() => {
-    if (!selectedWorkflowId || selectedWorkflowId === workflowId) {
-      void Promise.resolve().then(() => setFetchedSteps(null));
+    void Promise.resolve().then(() => setFetchedSteps(null));
+    if (!open || !effectiveWorkflowId || effectiveWorkflowId === workflowId) {
       return;
     }
     let cancelled = false;
-    listWorkflowSteps(selectedWorkflowId)
+    listWorkflowSteps(effectiveWorkflowId)
       .then((response) => {
         if (cancelled) return;
         const sorted = [...response.steps].sort((a, b) => a.position - b.position);
-        setFetchedSteps(sorted.map((s) => ({ id: s.id, title: s.name, events: s.events })));
+        setFetchedSteps(
+          sorted.map((s) => ({
+            id: s.id,
+            title: s.name,
+            workflowId: effectiveWorkflowId,
+            position: s.position,
+            is_start_step: s.is_start_step,
+            events: s.events,
+          })),
+        );
       })
       .catch(() => {
         if (!cancelled) setFetchedSteps(null);
@@ -50,7 +64,7 @@ export function useWorkflowStepsEffect(fs: DialogFormState, workflowId: string |
     return () => {
       cancelled = true;
     };
-  }, [selectedWorkflowId, workflowId, setFetchedSteps]);
+  }, [effectiveWorkflowId, open, workflowId, setFetchedSteps]);
 }
 
 export function useDiscoverReposEffect(
@@ -536,7 +550,8 @@ export function useGitHubUrlErrorEffect(fs: DialogFormState, open: boolean) {
 }
 
 export function useTaskCreateDialogEffects(fs: DialogFormState, args: TaskCreateEffectsArgs) {
-  const { open, workspaceId, workflowId, repositories, repositoriesLoading } = args;
+  const { open, workspaceId, workflowId, effectiveWorkflowId, repositories, repositoriesLoading } =
+    args;
   const {
     agentProfiles,
     compatibleAgentProfiles,
@@ -547,7 +562,7 @@ export function useTaskCreateDialogEffects(fs: DialogFormState, args: TaskCreate
     workflows,
     isLocalExecutor,
   } = args;
-  useWorkflowStepsEffect(fs, workflowId);
+  useWorkflowStepsEffect(fs, open, workflowId, effectiveWorkflowId);
   useWorkflowAgentProfileEffect(fs, workflows, agentProfiles, compatibleAgentProfiles, {
     lastUsedAgentProfileId: args.lastUsedAgentProfileId,
     authLoaded,
diff --git a/apps/web/components/task-create-dialog-types.ts b/apps/web/components/task-create-dialog-types.ts
index faea9f2b56..2bb93641bd 100644
--- a/apps/web/components/task-create-dialog-types.ts
+++ b/apps/web/components/task-create-dialog-types.ts
@@ -72,6 +72,10 @@ export type TaskRemoteRepoRow = {
 export type StepType = {
   id: string;
   title: string;
+  /** Workflow that supplied these fallback-only steps. */
+  workflowId?: string;
+  position?: number;
+  is_start_step?: boolean;
   events?: {
     on_enter?: Array<{ type: string; config?: Record<string, unknown> }>;
     on_turn_complete?: Array<{ type: string; config?: Record<string, unknown> }>;
@@ -176,6 +180,7 @@ export type TaskCreateEffectsArgs = {
   open: boolean;
   workspaceId: string | null;
   workflowId: string | null;
+  effectiveWorkflowId: string | null;
   repositories: Repository[];
   repositoriesLoading: boolean;
   agentProfiles: AgentProfileOption[];
diff --git a/apps/web/components/task-create-dialog-workflow-context.ts b/apps/web/components/task-create-dialog-workflow-context.ts
new file mode 100644
index 0000000000..172b19495b
--- /dev/null
+++ b/apps/web/components/task-create-dialog-workflow-context.ts
@@ -0,0 +1,21 @@
+"use client";
+
+import { resolveTaskCreateWorkflowContext } from "@/components/task-create-dialog-defaults";
+import { useAppStore } from "@/components/state-provider";
+
+type WorkflowContextProps = {
+  workflowId: string | null;
+  defaultStepId: string | null;
+  lockedFields?: { workflow?: boolean };
+};
+
+export function useResolvedTaskCreateWorkflowContext<T extends WorkflowContextProps>(props: T): T {
+  const workflows = useAppStore((state) => state.workflows?.items ?? []);
+  const context = resolveTaskCreateWorkflowContext(
+    props.workflowId,
+    props.defaultStepId,
+    workflows,
+    props.lockedFields?.workflow === true,
+  );
+  return { ...props, ...context };
+}
diff --git a/apps/web/components/task-create-dialog.tsx b/apps/web/components/task-create-dialog.tsx
index 3d79f7a2b1..68a6eec71a 100644
--- a/apps/web/components/task-create-dialog.tsx
+++ b/apps/web/components/task-create-dialog.tsx
@@ -48,6 +48,7 @@ import { useAppStore } from "@/components/state-provider";
 import { TaskCreateDialogPopoverContainerProvider } from "@/hooks/use-task-create-dialog-popover-container";
 import { shouldShowTaskTitleField } from "@/components/task-create-dialog-helpers";
 import { usePromptResultDelivery } from "@/hooks/use-prompt-result-delivery";
+import { useResolvedTaskCreateWorkflowContext } from "@/components/task-create-dialog-workflow-context";
 
 const PROMPT_INSERTED_MESSAGE = "Enhanced prompt inserted.";
 
@@ -430,11 +431,11 @@ export function useTaskCreateDialogSetup(
   props: TaskCreateDialogProps,
   options: { preserveQueuedLastUsedOnClose?: () => void } = {},
 ) {
-  const { open, mode = "create", workspaceId, workflowId, defaultStepId } = props;
-  const { editingTask, initialValues } = props;
+  const resolvedProps = useResolvedTaskCreateWorkflowContext(props);
+  const { open, mode = "create", workspaceId, workflowId, defaultStepId } = resolvedProps;
+  const { editingTask, initialValues } = resolvedProps;
   const isSessionMode = mode === "session";
   const isEditMode = mode === "edit";
-  const isCreateMode = mode === "create";
   const isTaskStarted = computeIsTaskStarted(isEditMode, editingTask);
   const fs = useDialogFormState(open, workspaceId, workflowId, initialValues);
   const upsertWorkspaceRepository = useAppStore((state) => state.upsertRepository);
@@ -457,6 +458,7 @@ export function useTaskCreateDialogSetup(
     open,
     workspaceId,
     workflowId,
+    effectiveWorkflowId: computed.effectiveWorkflowId,
     repositories,
     repositoriesLoading,
     agentProfiles,
@@ -481,7 +483,7 @@ export function useTaskCreateDialogSetup(
     upsertWorkspaceRepository,
   });
   const submitHandlers = useSubmitHandlersWiring({
-    props,
+    props: resolvedProps,
     fs,
     computed,
     workspaceRepositories: repositories,
@@ -492,21 +494,18 @@ export function useTaskCreateDialogSetup(
   });
   const guardedHandleSubmit = useGuardedSubmit(
     submitHandlers.handleSubmit,
-    props.submitBlockedReason,
+    resolvedProps.submitBlockedReason,
   );
   const handleKeyDown = useKeyboardShortcutHandler(SHORTCUTS.SUBMIT, (event) => {
     guardedHandleSubmit(event as unknown as FormEvent);
   });
-  // Fresh-branch is single-row + local executor + not URL mode. The chip row
-  // can hold any number of repos; we hide the toggle whenever the question
-  // ("which repo do we discard local changes in?") becomes ambiguous.
   const freshBranchAvailable =
     !fs.useRemote && computed.isLocalExecutor && fs.repositories.length === 1;
   return {
     fs,
     isSessionMode,
     isEditMode,
-    isCreateMode,
+    isCreateMode: mode === "create",
     isTaskStarted,
     sessionRepoName,
     workflows,
@@ -523,7 +522,7 @@ export function useTaskCreateDialogSetup(
     taskCreateLastUsed,
     userSettingsLoaded,
     guardedHandleSubmit,
-    enhance: useEnhanceForDialog(fs, props.taskId, props.open),
+    enhance: useEnhanceForDialog(fs, resolvedProps.taskId, resolvedProps.open),
     handleJiraImport: useJiraImportHandler(fs),
     handleLinearImport: useLinearImportHandler(fs),
   };
diff --git a/apps/web/e2e/tests/task/create-task.spec.ts b/apps/web/e2e/tests/task/create-task.spec.ts
index b300528beb..e7bebd1857 100644
--- a/apps/web/e2e/tests/task/create-task.spec.ts
+++ b/apps/web/e2e/tests/task/create-task.spec.ts
@@ -12,6 +12,45 @@ const START_ENABLED_TIMEOUT = 30_000;
 const DONE_STATES = ["COMPLETED", "WAITING_FOR_INPUT"];
 
 test.describe("Task creation", () => {
+  test("hidden workflow task detail does not leak into standard task creation", async ({
+    testPage,
+    apiClient,
+    seedData,
+  }) => {
+    const hidden = await apiClient.e2eCreateHiddenWorkflow(
+      seedData.workspaceId,
+      "Hidden task-detail workflow",
+    );
+    const hiddenStart = await apiClient.createWorkflowStep(hidden.id, "Improve", 0, {
+      is_start_step: true,
+    });
+    const sourceTask = await apiClient.createTask(seedData.workspaceId, "Hidden source task", {
+      description: "Source task in the hidden workflow",
+      workflow_id: hidden.id,
+      workflow_step_id: hiddenStart.id,
+    });
+
+    await testPage.goto(`/t/${sourceTask.id}`);
+    await testPage.getByTestId("create-task-button").first().click();
+
+    const dialog = testPage.getByTestId("create-task-dialog");
+    await expect(dialog).toBeVisible();
+    await dialog.getByTestId("task-title-input").fill("Visible workflow task");
+    await dialog.getByTestId("task-description-input").fill("Created from hidden task detail");
+    await expect(dialog.getByTestId(START_AGENT_TEST_ID)).toBeEnabled({
+      timeout: START_ENABLED_TIMEOUT,
+    });
+    await dialog.getByTestId("submit-start-agent-chevron").click();
+    await testPage.getByTestId("submit-create-without-agent").click();
+
+    await expect
+      .poll(() => getTaskIdFromPage(testPage), { timeout: 15_000 })
+      .not.toBe(sourceTask.id);
+    const createdTaskId = await getTaskIdFromPage(testPage);
+    const createdTask = await apiClient.getTask(createdTaskId);
+    expect(createdTask.workflow_step_id).toBe(seedData.startStepId);
+  });
+
   test("selects the single visible workflow when hidden workflows are loaded", async ({
     testPage,
     apiClient,
diff --git a/apps/web/e2e/tests/task/mobile-hidden-workflow-task-create.spec.ts b/apps/web/e2e/tests/task/mobile-hidden-workflow-task-create.spec.ts
new file mode 100644
index 0000000000..bbad04d46e
--- /dev/null
+++ b/apps/web/e2e/tests/task/mobile-hidden-workflow-task-create.spec.ts
@@ -0,0 +1,58 @@
+import { test, expect } from "../../fixtures/test-base";
+
+test.describe("Mobile task creation from hidden workflow context", () => {
+  test("creates the new task in the visible workflow", async ({
+    testPage,
+    apiClient,
+    seedData,
+  }) => {
+    const hidden = await apiClient.e2eCreateHiddenWorkflow(
+      seedData.workspaceId,
+      "Hidden mobile task-detail workflow",
+    );
+    const hiddenStart = await apiClient.createWorkflowStep(hidden.id, "Improve", 0, {
+      is_start_step: true,
+    });
+    const sourceTask = await apiClient.createTask(seedData.workspaceId, "Hidden mobile source", {
+      description: "Source task in the hidden workflow",
+      workflow_id: hidden.id,
+      workflow_step_id: hiddenStart.id,
+    });
+
+    await testPage.goto(`/t/${sourceTask.id}`);
+    await testPage.getByTestId("mobile-session-menu").tap();
+    const taskDrawer = testPage.getByRole("dialog", { name: "Tasks" });
+    await expect(taskDrawer).toBeVisible();
+    await taskDrawer.getByRole("button", { name: "New", exact: true }).tap();
+
+    const createDialog = testPage.getByTestId("create-task-dialog");
+    await expect(createDialog).toBeVisible();
+    await createDialog.getByTestId("task-title-input").fill("Visible mobile workflow task");
+    await createDialog
+      .getByTestId("task-description-input")
+      .fill("Created from hidden mobile task detail");
+    const startAgent = createDialog.getByTestId("submit-start-agent");
+    await expect(startAgent).toBeEnabled({ timeout: 30_000 });
+    const createOnly = createDialog.getByRole("button", { name: "Create only", exact: true });
+    await expect(createOnly).toBeEnabled();
+    await createOnly.tap();
+
+    await expect
+      .poll(() => taskIdFromURL(testPage.url()), { timeout: 15_000 })
+      .not.toBe(sourceTask.id);
+    const createdTaskId = taskIdFromURL(testPage.url());
+    const createdTask = await apiClient.getTask(createdTaskId);
+    expect(createdTask.workflow_step_id).toBe(seedData.startStepId);
+    expect(
+      await testPage.evaluate(
+        () => document.documentElement.scrollWidth <= document.documentElement.clientWidth,
+      ),
+    ).toBe(true);
+  });
+});
+
+function taskIdFromURL(url: string): string {
+  const match = url.match(/\/t\/([^/?]+)/);
+  if (!match) throw new Error(`Cannot extract task ID from URL: ${url}`);
+  return match[1];
+}
diff --git a/docs/plans/standard-task-create-hidden-workflow-context/plan.md b/docs/plans/standard-task-create-hidden-workflow-context/plan.md
new file mode 100644
index 0000000000..d0fcfea47d
--- /dev/null
+++ b/docs/plans/standard-task-create-hidden-workflow-context/plan.md
@@ -0,0 +1,114 @@
+---
+spec: docs/specs/improve-kandev/spec.md
+created: 2026-07-29
+status: implemented
+---
+
+# Implementation Plan: Standard Task Creation From Hidden Workflow Context
+
+## Overview
+
+The task-detail boot payload correctly exposes the current task's hidden
+workflow so the task can render, but standard New Task entry points pass that
+context straight into the shared task-create dialog. The dialog treats it as an
+explicit selection, so a task created while viewing an Improve Kandev task can
+silently inherit the hidden Improve workflow.
+
+Normalize the workflow context at the shared task-create boundary: ordinary
+task creation must discard a hidden contextual workflow and fall back to the
+workspace's visible workflows, while a feature wrapper with a locked workflow
+continues to preserve its explicit hidden workflow. Fetch the visible
+workflow's steps when the normalized fallback differs from the caller-provided
+context, then prove the behavior through unit and desktop/mobile E2E coverage.
+
+## Frontend
+
+### Shared workflow-context normalization
+
+- Add a pure workflow-context resolver in
+  `apps/web/components/task-create-dialog-defaults.ts`.
+- When the caller-provided workflow is hidden and
+  `lockedFields.workflow !== true`, clear the provided workflow and default
+  step before initializing, resetting, or submitting the dialog. This lets the
+  existing visible-only single-workflow fallback choose the workspace's Kanban
+  workflow.
+- Preserve visible workflows and preserve explicitly locked hidden workflows,
+  including the Improve Kandev wrapper.
+- Apply the normalized workflow/default-step context consistently in
+  `apps/web/components/task-create-dialog.tsx`; do not change the task-detail
+  boot state because it still needs the hidden workflow to render the task.
+
+### Fallback step loading
+
+- Extend the workflow-step effect in
+  `apps/web/components/task-create-dialog-effects.ts` to load steps for the
+  computed effective workflow when it differs from the normalized
+  caller-provided workflow.
+- Update the default-step resolver in
+  `apps/web/components/task-create-dialog-defaults.ts` so fetched steps for the
+  effective fallback supply its start/first step. Do not reuse the hidden
+  workflow's step ID.
+- Keep the existing explicit workflow-switch behavior unchanged.
+
+### Mobile design contract
+
+- Desktop entry point remains the app-sidebar **New Task** action.
+- Mobile entry point remains the **New** action in
+  `apps/web/components/task/mobile/session-task-switcher-sheet.tsx`, the nearest
+  shipped mobile exemplar.
+- The existing task drawer, task-create dialog, hierarchy, scroll ownership,
+  safe-area behavior, and touch targets do not change. Desktop and mobile share
+  the same workflow normalization and step-loading logic.
+- Mobile Playwright coverage creates a task from the existing task drawer while
+  viewing a hidden-workflow task and verifies the visible workflow receives it.
+
+## Tests
+
+- **What:** an unlocked hidden contextual workflow is removed, while a locked
+  hidden workflow and an ordinary visible workflow are preserved.
+  **File:** `apps/web/components/task-create-dialog-defaults.test.ts`.
+  **How:** table-driven pure-function tests.
+- **What:** a visible fallback workflow that differs from the provided context
+  fetches its steps and resolves the visible start step.
+  **Files:** `apps/web/components/task-create-dialog-effects.test.ts` and
+  `apps/web/components/task-create-dialog-defaults.test.ts`.
+  **How:** focused hook and pure-function tests that fail against the current
+  selected-workflow-only loading rule.
+
+## E2E Tests
+
+- **Scenario:** GIVEN a task in a hidden workflow, WHEN the user opens the
+  desktop sidebar New Task dialog and creates a task, THEN the created task's
+  workflow step belongs to the visible Kanban workflow.
+  **File:** `apps/web/e2e/tests/task/create-task.spec.ts`.
+  **What to verify:** seed a hidden workflow and task, navigate directly to the
+  task, create without an agent through the sidebar, and query the created task
+  to compare `workflow_step_id` with the visible workflow's start step.
+- **Scenario:** GIVEN the same hidden task on a phone viewport, WHEN the user
+  opens the mobile task drawer, taps **New**, and creates a task, THEN the task
+  uses the visible workflow.
+  **File:** `apps/web/e2e/tests/task/mobile-hidden-workflow-task-create.spec.ts`.
+  **What to verify:** drive the existing drawer and dialog with touch-oriented
+  interactions, then assert the created task's workflow step and absence of
+  document horizontal overflow.
+
+## Implementation Task
+
+- [x] [task-01-normalize-task-create-workflow](task-01-normalize-task-create-workflow.md)
+  — done
+
+The task performs unit and desktop/mobile E2E RED runs before changing
+production code, then implements and reruns the same focused checks GREEN.
+After the targeted checks pass, run the workflow-requested repository gates in
+order (`make fmt`, then `make typecheck test lint`) and commit with a
+Conventional Commit message.
+
+## Risks And Out Of Scope
+
+- Hidden workflows remain stored in SQLite and present in task-detail boot
+  state; they are not database corruption.
+- This fix does not change workflow visibility APIs, migrations, workflow
+  persistence, or the Improve Kandev bootstrap contract.
+- The linked task ID is absent from the current database, so its original
+  request cannot be reconstructed from persisted rows; the current task and
+  task-detail boot payload reproduce the same failure path.
diff --git a/docs/plans/standard-task-create-hidden-workflow-context/task-01-normalize-task-create-workflow.md b/docs/plans/standard-task-create-hidden-workflow-context/task-01-normalize-task-create-workflow.md
new file mode 100644
index 0000000000..0caa561d6d
--- /dev/null
+++ b/docs/plans/standard-task-create-hidden-workflow-context/task-01-normalize-task-create-workflow.md
@@ -0,0 +1,86 @@
+---
+id: "01-normalize-task-create-workflow"
+title: "Normalize standard task-create workflow context"
+status: done
+wave: 1
+depends_on: []
+plan: "plan.md"
+spec: "../../specs/improve-kandev/spec.md"
+---
+
+# Task 01: Normalize standard task-create workflow context
+
+## Acceptance
+
+- Standard task creation ignores a hidden workflow inherited from task-detail
+  state and resolves the workspace's sole visible workflow.
+- Feature wrappers with `lockedFields.workflow` continue to create tasks in
+  their explicitly supplied hidden workflow.
+- When normalization selects a different workflow, its fetched start/first step
+  becomes the submitted default step; no step from the hidden workflow leaks.
+- Desktop sidebar and mobile task-drawer E2E flows both prove that a task
+  created from a hidden-workflow task lands in the visible workflow.
+
+## Verification
+
+- `cd apps && pnpm install --frozen-lockfile` (required once in a fresh worktree)
+- `cd apps && pnpm --filter @kandev/web test -- --run components/task-create-dialog-defaults.test.ts components/task-create-dialog-effects.test.ts`
+- `cd apps/web && pnpm run typecheck`
+- `cd apps/web && pnpm e2e:run tests/task/create-task.spec.ts -- --grep "hidden workflow task detail"`
+- `cd apps/web && pnpm e2e:run tests/task/mobile-hidden-workflow-task-create.spec.ts -- --project=mobile-chrome`
+- `make fmt`
+- `make typecheck test lint`
+
+## Files likely touched
+
+- `apps/web/components/task-create-dialog-defaults.ts`
+- `apps/web/components/task-create-dialog-defaults.test.ts`
+- `apps/web/components/task-create-dialog-effects.ts`
+- `apps/web/components/task-create-dialog-effects.test.ts`
+- `apps/web/components/task-create-dialog-types.ts`
+- `apps/web/components/task-create-dialog.tsx`
+- `apps/web/e2e/tests/task/create-task.spec.ts`
+- `apps/web/e2e/tests/task/mobile-hidden-workflow-task-create.spec.ts`
+- `apps/web/e2e/helpers/api-client.ts` only if the existing task response
+  helper needs to expose `workflow_id` for a behavioral assertion
+
+## Dependencies
+
+None.
+
+## Parallelism
+
+Sequential.
+
+## Inputs
+
+- Hidden-workflow requirements and task-detail regression scenario in
+  `docs/specs/improve-kandev/spec.md`.
+- Frontend approach in `plan.md`.
+- Existing visible fallback in
+  `apps/web/components/task-create-dialog-defaults.ts`.
+- Explicit hidden workflow wrapper in
+  `apps/web/components/improve-kandev-dialog-create.tsx`.
+- Existing hidden workflow E2E seeding in
+  `apps/web/e2e/helpers/api-client.ts`.
+- Existing mobile task drawer in
+  `apps/web/components/task/mobile/session-task-switcher-sheet.tsx`.
+
+## Output contract
+
+Report the unit and E2E RED/GREEN command results, changed files, failure
+artifacts, remaining risks, and update this task to `done` plus the
+corresponding plan checkbox in the primary conversation.
+
+## Verification Results
+
+- RED: focused dialog tests failed in five expected assertions before
+  implementation (missing context resolver, missing visible-step fetch, and
+  missing visible start-step selection).
+- RED: desktop Chromium created the new task with the hidden workflow step
+  instead of the visible Kanban start step.
+- GREEN: 48 focused task-create dialog tests passed.
+- GREEN: desktop Chromium and mobile Chrome hidden-workflow creation scenarios
+  passed, including the persisted step assertion and mobile overflow check.
+- GREEN: `make fmt`.
+- GREEN: `make typecheck test lint`.
diff --git a/docs/specs/improve-kandev/spec.md b/docs/specs/improve-kandev/spec.md
index 71bbb5ef50..a16318c3f0 100644
--- a/docs/specs/improve-kandev/spec.md
+++ b/docs/specs/improve-kandev/spec.md
@@ -53,7 +53,11 @@ the user's own agent picks up immediately — turning every report into a contri
   dialog. It is reachable only through the Improve Kandev entry point.
 - Hidden workflows do not count as choices in the standard task-create dialog.
   When the active workspace has exactly one visible workflow, the dialog uses
-  that workflow implicitly and omits the redundant workflow selector.
+  that workflow implicitly and omits the redundant workflow selector. This
+  remains true when the standard dialog is opened from a task-detail route
+  whose task belongs to a hidden workflow; only a feature wrapper that
+  explicitly locks the workflow may create another task in that hidden
+  workflow.
 - The `report-kandev-issue` workflow is also hidden and reachable only through
   the **Open issue** option. Its agent reads the repository's current bug-report
   or feature-request issue form, gathers every required field from the user,
@@ -142,6 +146,12 @@ the user's own agent picks up immediately — turning every report into a contri
   explicit workflow, **THEN** the visible workflow is selected implicitly and
   the workflow selector does not appear.
 
+- **GIVEN** the user is viewing a task that belongs to a hidden Improve Kandev
+  workflow, **WHEN** they open the standard New Task dialog from either the
+  desktop sidebar or the mobile task drawer and create a task, **THEN** the new
+  task uses the workspace's visible workflow rather than inheriting the hidden
+  task-detail workflow.
+
 - **GIVEN** the user has not configured `gh auth`, **WHEN** they open the
   Improve Kandev dialog, **THEN** the dialog shows a blocking error referencing
   the health-check result and disables the submit button.