https://bugs.kde.org/show_bug.cgi?id=440154

            Bug ID: 440154
           Summary: Firefox becomes unusable after compositing stops
           Product: kwin
           Version: git master
          Platform: Compiled Sources
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: compositing
          Assignee: kwin-bugs-n...@kde.org
          Reporter: mufeed.666...@gmail.com
  Target Milestone: ---

SUMMARY

Crashing KWin, crashing compositing, using a fullscreen application that
disables compositing, etc will make Firefox unusable and stuck at the last
frame before the event.

STEPS TO REPRODUCE
1. Open Firefox
2. Play a full screen video with mpv (which disables compositing)
3. Exit full screen
4. Go back to Firefox

OBSERVED RESULT
Firefox will be stuck on the last frame before disabling compositing and will
not be interactive

EXPECTED RESULT
Firefox should be normally usable

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 34 KDE
(available in About System)
KDE Plasma Version: 5.22.80
KDE Frameworks Version: 5.85.0
Qt Version: 5.15.2

ADDITIONAL INFORMATION
I've tested this with both KWin 5.22.3 and git master and both on Arch and
Fedora as well. This is on Xorg, using the amdgpu driver with a Ryzen 2500U APU
that has Radeon Vega 8 integrated graphics.

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