Bug 480670

Summary: No window thumbnails on Wayland when animation speed is set to instant
Product: [Plasma] plasmashell Reporter: Kotori Itsuka <cmdrkotori2>
Component: Task Manager and Icons-Only Task Manager widgetsAssignee: Plasma Bugs List <plasma-bugs-null>
Status: RESOLVED UPSTREAM    
Severity: minor CC: bugseforuns, fanzhuyifan, qydwhotmail
Priority: NOR Keywords: qt6
Version First Reported In: 5.93.0   
Target Milestone: 1.0   
Platform: Arch Linux   
OS: Linux   
URL: https://bugreports.qt.io/browse/QTBUG-121791
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: blank window thumbnail

Description Kotori Itsuka 2024-02-01 11:42:24 UTC 
Created attachment 165433 [details]
blank window thumbnail

SUMMARY
Window thumbnails don't work in the wayland session. Window thumbnail is blank.
Works on X11.

STEPS TO REPRODUCE
1. Use wayland session
2. Open konsole
3. Hover over konsole's icon in the task manager

OBSERVED RESULT
Blank window thumbnail

EXPECTED RESULT
Window thumbnail displays window contents

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 5.93.0
KDE Frameworks Version: 5.249.0
Qt Version: 6.7.0
Kernel Version: 6.7.2-arch1-2 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 2700X Eight-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: AMD Radeon RX 6500 XT

ADDITIONAL INFORMATION
kpipewire works, I can capture windows with https://mozilla.github.io/webrtc-landing/gum_test.html
Comment 1 Kotori Itsuka 2024-02-01 13:04:03 UTC 
I was fiddling around in system settings and it only seems to happen when animation speed is set to instant.
Comment 2 fanzhuyifan 2024-02-01 16:51:00 UTC 
Can confirm
Comment 3 fanzhuyifan 2024-02-01 17:41:36 UTC 
Let's fix this in upstream Qt: https://bugreports.qt.io/browse/QTBUG-121791