| Summary: | Broken scaling in Qt6 apps when display scale is set to <100% | ||
|---|---|---|---|
| Product: | [Plasma] kwin | Reporter: | Kit <n.makarov42> |
| Component: | wayland-generic | Assignee: | KWin default assignee <kwin-bugs-null> |
| Status: | RESOLVED UPSTREAM | ||
| Severity: | normal | CC: | kde |
| Priority: | NOR | ||
| Version First Reported In: | 5.27.5 | ||
| Target Milestone: | --- | ||
| Platform: | Arch Linux | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed/Implemented In: | ||
| Sentry Crash Report: | |||
| Attachments: |
Comparison between Strawberry (Qt6 app) and Picard (Qt5 app)
qBittorrent Audacious |
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Created attachment 159044 [details]
qBittorrent
Created attachment 159045 [details]
Audacious
I submitted a patch to Qt. |
Created attachment 159043 [details] Comparison between Strawberry (Qt6 app) and Picard (Qt5 app) SUMMARY In the Plasma Wayland session, setting the display scale factor to less than 100% causes several issues with Qt6 apps, making them unusable: incorrect scale of UI elements, flickering, items disappearing, among others. Scaling factors above 100% show no such issues - apps are functioning normally. I've tried Strawberry Music Player, Audacious, qBittorrent and qt6ct - all of them exhibit similar problems. Qt5 apps are unaffected (see attachments). STEPS TO REPRODUCE 1. Set display scale factor to any value below 100% 2. Launch a Qt6 app OBSERVED RESULT App launches normally; icon, text, interface scale is abnormal; several UI elements non-interactable; UI elements flickering and disappearing. EXPECTED RESULT A normally-functioning app. SOFTWARE/OS VERSIONS Linux Kernel: 6.3.2-arch1-1 KDE Plasma Version: 5.27.5 KDE Frameworks Version: 5.108.0 Qt Version: 5.15.9 ADDITIONAL INFORMATION