https://bugs.kde.org/show_bug.cgi?id=495099

            Bug ID: 495099
           Summary: Windows flickering (showing windows below for short
                    periods of time)
    Classification: Plasma
           Product: kwin
           Version: 6.2.0
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: compositing
          Assignee: kwin-bugs-n...@kde.org
          Reporter: k...@rad1an.aleeas.com
  Target Milestone: ---

SUMMARY
Sometimes, after the update to plasma 6.2, windows start to flicker, showing
windows below for short periods of time.

Most commonly this occurs while watching a video in a browser and moving a
mouse or when opening popups (krunner, tray etc). However it can happen in
other circumstances too.

This is only visible on my second monitor, so I believe there might be two
explanations:
- Bad handling of a second display
- My second display having higher refresh rate than my main one's (144 Hz vs 60
Hz) - seems more reasonable to me

STEPS TO REPRODUCE
1. Use the system
2. Maybe use popups to catalyze the process

OBSERVED RESULT
See wallpaper or windows below show up for a very short period of time

EXPECTED RESULT
The windows are just shown normally

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: kernel 6.11.3-200.fsync.fc40.x86_64 (64-bit); wayland
KDE Plasma Version: 6.2.0
KDE Frameworks Version: 6.7.0
Qt Version: 6.7.2

ADDITIONAL INFORMATION
I attach a video from my phone (for some reason obs does not capture the
behaviour)

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