xammen8/24/2026, 9:20:29 PM

Rapid audio device connect/disconnect fires many CollectionChanged events
in <100ms. Each one triggered UpdateLayout immediately, and the
VirtualizingStackPanel's Verify() could run between two InsertItem calls,
detecting an accumulated count mismatch and crashing with
InvalidOperationException.

Now InvalidateWindowSize coalesces via a 16ms DispatcherTimer (one frame
at 60fps) so only the last invalidation in a burst actually triggers
layout, when the collection is already stable.

Parent932f6a0