Bug 506101 - Some windows from other virtual desktops appear frozen and only show the last frame when invoking the Grid / Overview Effect
Summary: Some windows from other virtual desktops appear frozen and only show the last...
Status: RESOLVED FIXED
Alias: None
Product: kwin
Classification: Plasma
Component: general (other bugs)
Version First Reported In: 6.4.0
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords: regression
Depends on:
Blocks:
 
Reported: 2025-06-24 10:10 UTC by postix
Modified: 2025-06-30 15:51 UTC (History)
3 users (show)

See Also:
Latest Commit: d80fea283f911f6ec106e1799f877dc920906293
Version Fixed In: 6.4.2
Sentry Crash Report:

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Description postix 2025-06-24 10:10:17 UTC 
SUMMARY

Similar / same bug as bug #456280.

Depending on the application, some windows on other virtual desktops stop rendering continuously, when invoking the Grid or Overview Effect.

STEPS TO REPRODUCE
1. Open Chromium or Konsole and MPV on desktop B
2. Make sure that these apps show some animation
3. Open the Grid Effect on desktop A

OBSERVED RESULT
- Chromium and Konsole only show the last frame.
+ MPV keeps rendering.

EXPECTED RESULT
Any window from any other virtual desktops is rendered in real time.

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 42
KDE Plasma Version: 6.4.0
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.1
Kernel Version: 6.15.3-200.fc42.x86_64 (64-bit)
Graphics Platform: Wayland
Comment 1 TraceyC 2025-06-25 20:32:07 UTC 
I can reproduce this in git-master
Comment 2 postix 2025-06-30 15:05:32 UTC 
https://invent.kde.org/plasma/kwin/-/merge_requests/7829 reads as if it could have fixed this issue - but not sure as I'm not a kwin dev. :-)
Comment 3 bastimeyer123 2025-06-30 15:40:09 UTC 
(In reply to postix from comment #2)
> https://invent.kde.org/plasma/kwin/-/merge_requests/7829 reads as if it
> could have fixed this issue - but not sure as I'm not a kwin dev. :-)

I've just built from the cherry-picked commit on the `Plasma/6.4` branch (d80fea283f911f6ec106e1799f877dc920906293), and the commit did indeed fix the issue. Thanks! The commit's body text should've included this bug id.
Comment 4 postix 2025-06-30 15:51:12 UTC 
Thanks, I set it to resolved fixed then! \o