Bug 436421

SUMMARY
If KWin / Plasma is ran on Wayland, then after Window is shaded, it unshades automatically once cursor enters extents originally occupied by unshaded window. Behavior is correct using X11.

STEPS TO REPRODUCE
1. Make sure, that "Window unshading" in "Advanced Window Behavior" tab of Window Manager preferences is enabled.
2. Open new window of whatever application, e.g. Konsole.
3. Shade it (mouse scroll or via context menu)
4. Move mouse cursor to leave window region to allow the window to shade, if it didn't shade already.
5. Move mouse cursor to lower part of region previously covered by the window, while avoiding window's title bar.

OBSERVED RESULT
Window will unshade automatically effectively preventing user from navigating mouse cursor into area occupied by window when unshaded.

EXPECTED RESULT
Window should remain shaded as shading shall only be activated on titlebar focus  as per step 1. This is how KWin behaves on X11.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Manjaro-ARM
(available in About System)
KDE Plasma Version: 5.21.4
KDE Frameworks Version: 5.81.4
Qt Version: 5.15.2

ADDITIONAL INFORMATION