If show desktop is activated (enter edit mode in plasmashell) hotcorners are still active and overview can be started. If a window is clicked it animates back, but the user is still in show desktop mode so the selected window suddenly disappears. Dismissing show desktop when overview starts is probably the easiest solution
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/5799
Git commit 5d90f232bd62ba0f774b0992fb90821c2d44e932 by David Edmundson. Committed on 30/05/2024 at 08:06. Pushed by davidedmundson into branch 'master'. effects: Disable showing desktop when starting any fullscreen effect Fullscreen effects typically will show all the windows, when the effect ends having the windows disappear doesn't really work. From a user point of view any full screen effect is a new task, we want to cancel any preivous task. M +2 -0 src/effect/effecthandler.cpp https://invent.kde.org/plasma/kwin/-/commit/5d90f232bd62ba0f774b0992fb90821c2d44e932
Git commit 60e2b59dad817fbbb7407e6e4712c23d754ba13a by David Edmundson. Committed on 02/06/2024 at 11:12. Pushed by davidedmundson into branch 'Plasma/6.1'. effects: Disable showing desktop when starting any fullscreen effect Fullscreen effects typically will show all the windows, when the effect ends having the windows disappear doesn't really work. From a user point of view any full screen effect is a new task, we want to cancel any preivous task. (cherry picked from commit 5d90f232bd62ba0f774b0992fb90821c2d44e932) M +2 -0 src/effect/effecthandler.cpp https://invent.kde.org/plasma/kwin/-/commit/60e2b59dad817fbbb7407e6e4712c23d754ba13a