https://bugs.kde.org/show_bug.cgi?id=483203
Bug ID: 483203
Summary: Window background color opacity incorrect in KiCad
after upgrading from Plasma 5 Wayland to Plasma 6
Classification: Plasma
Product: kwin
Version: 6.0.1
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: core
Assignee: kwin-bugs-n...@kde.org
Reporter: ste...@prjct.net
Target Milestone: ---
Created attachment 166936
--> https://bugs.kde.org/attachment.cgi?id=166936&action=edit
Screenshot of KiCad color theme preview, showing issue
SUMMARY
After the regular Arch upgrades, which included Plasma 6, KiCad is unable to
correctly set the window background color. The attachment shows the problem in
action, where the preview background should be all black on the right (preview)
panel, but is only tinted slightly (as if applying the chosen black color with
0.05 opacity or so). Changing the color does change the tint.
Discussion on this bug on the KiCad side is here:
https://gitlab.com/kicad/code/kicad/-/issues/17341
Both before and after the bug I was using Plasma with Wayland. The issue
disappears when either (a) X11 is used (in Plasma 5 or 6) or (b) when forcing
KiCad to use software rendering. Sadly KiCad's software rendering is _also_
broken on Plasma 6 (in different ways) so that's not a viable workaround.
KDE Plasma Version: 6.0.1
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
Graphics: Mesa Intel UHD
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