https://bugs.kde.org/show_bug.cgi?id=522328
Bug ID: 522328
Summary: 150% global scale causes a fractional scaling bug
within Qt applications
Classification: I don't know
Product: kde
Version First unspecified
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 193812
--> https://bugs.kde.org/attachment.cgi?id=193812&action=edit
Fractional Scaling Issue
DESCRIPTION
Qt applications under wayland aren't drawing correctly at 150% global scale
Ran kate with QT_QPA_PLATFORM=xcb, and the display bug went away. Changed
global scaling from 150% in settings, to 125% and ran with wayland backend
again, and the display bug is gone.
STEPS TO REPRODUCE
1. Using a wayland session on a 3840x2160 display, change global scaling to
150%
2. Open any Qt application
3. Maximize the window
OBSERVED RESULT
Drawn application surface is mangled
EXPECTED RESULT
Normal window drawing
SOFTWARE/OS VERSIONS
Operating System (available in the Info Center app, or by running `kinfo` in a
terminal window): Manjaro Linux
KDE Plasma Version: 6.7.1
KDE Frameworks Version: 6.27.0
Qt Version: 6.11.1
ADDITIONAL INFORMATION
You can also get the same result when resizing the window to other dimensions
that happen to hit the division point - It's just that maximizing at this
screen resolution/Global Scale is easily hit.
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