The grid item wrapping DockviewReact had min-width: auto (CSS Grid
default), which equals the content-based minimum width. Dockview's
internal gridview element uses inline pixel widths, inflating the
grid item's minimum to the original viewport size and preventing it
from shrinking. This blocked the ResizeObserver from firing, so
dockview never redistributed panel sizes on window resize.
Add overflow-hidden and min-w-0 to the grid item so it can shrink
freely with the viewport.
José Almeida
17bfc1c923