https://bugs.kde.org/show_bug.cgi?id=436958
Bug ID: 436958
Summary: Diff view is transparent and flickers terribly on
Wayland
Product: kdiff3
Version: 1.9.0
Platform: Neon Packages
OS: Linux
Status: REPORTED
Severity: critical
Priority: NOR
Component: application
Assignee: reeves...@gmail.com
Reporter: geisse...@gmail.com
Target Milestone: ---
Created attachment 138352
--> https://bugs.kde.org/attachment.cgi?id=138352&action=edit
KDiff3 with transparent diff view and visual artifacts.
SUMMARY
Diff view is transparent and flickers terribly on Wayland since the latest
stable release 1.9.x. Never happend with 1.8.x.
STEPS TO REPRODUCE
1. Log in to a Plasma Wayland session
2. Launch KDiff3 (for example as git difftool)
OBSERVED RESULT
Diff view is transparent, the window / wallpaper below is visible. As soon as
any user action occurs, there will be the most terrible flickering and visual
artifacts.
EXPECTED RESULT
Nothing should be transparent. Nothing should flicker. Diff view should show up
properly as it used to in the previous releases.
SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.21
KDE Plasma Version: 5.21.5
KDE Frameworks Version: 5.81.0
Qt Version: 5.15.2
Kernel Version: 5.4.0-73-generic
OS Type: 64-bit
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-3570K CPU @ 3.40GHz
Memory: 7.2 GiB of RAM
Graphics Processor: Mesa DRI Intel® HD Graphics 4000
ADDITIONAL INFORMATION
See https://bugs.kde.org/show_bug.cgi?id=433484 and subsequent comments.
This (sadly) is a common problem, usually caused by native widget siblings or
deprecated QGLWidgets.
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