Bug 512936

Summary: Small stutter / flicker at the end of the slide animation, when switching a virtual desktop
Product: [Plasma] kwin Reporter: postix <postix>
Component: effects-variousAssignee: KWin default assignee <kwin-bugs-null>
Status: REPORTED ---    
Severity: normal CC: xaver.hugl
Priority: NOR    
Version First Reported In: 6.5.3   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Screen Recording

Description postix 2025-12-04 12:34:55 UTC
SUMMARY

When switching a virtual desktop, there's a small stutter or flicker at the very end of the slide animation, when the animation has finished.

It's noticeable when using the default 50% animation speed, most noticeable when using slowest and not visible, when using no / instant animations.

STEPS TO REPRODUCE
1. Slide to the left/right or slide top/bottom

OBSERVED RESULT
When animation has finished in principle, the screen's content oscillates very briefly in the same direction of the slide for a few pixels, looking a like tiny flicker / stutter.

I can upload a video recording later if needed.

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20251127
KDE Plasma Version: 6.5.3
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.1
Kernel Version: 6.17.9-1-default (64-bit)
Graphics Platform: Wayland
Graphics Processor: AMD Radeon RX 580 Series
Comment 1 Zamundaaa 2025-12-05 14:50:34 UTC
Can't reproduce, the animation looks smooth to me until the end.
Comment 2 postix 2025-12-05 15:40:23 UTC
Created attachment 187362 [details]
Screen Recording

Here's a screen recording, slowed down by factor of 8. I will checkout git master later this weekend.