Bug 514854

Summary:	The area between window decoration and app flickers briefly when going active/inactive
Product:	[Plasma] kwin	Reporter:	Jin Liu <ad.liu.jin>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	kde, notmart, uhhadd
Priority:	NOR
Version First Reported In:	6.5.90
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Jin Liu 2026-01-20 07:50:48 UTC

SUMMARY
I vaguely remember this didn't happen in 6.5.

STEPS TO REPRODUCE
1. Open two Dolphin windows side by side.
2. Click on Window #1.
3. Click on Window #2.

OBSERVED RESULT
The top area flickers for an instant when switching active/inactive colors. Unsure whether the problem is in the title bar or the toolbar.

EXPECTED RESULT
No flicker.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.5.90
KDE Frameworks Version: 6.22.0
Qt Version: 6.11.0
Kernel Version: 6.18.5-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 5600H with Radeon Graphics
Memory: 16 GiB of RAM (15.0 GiB usable)
Graphics Processor: AMD Radeon Graphics

Comment 1 Marco Martin 2026-01-20 08:46:16 UTC

This is a known issue due to the fact that the decoration and the rest of the app are drawn separatedly and is not yet possible to synchronize perfectly frame by frame their color transitions

Comment 2 David Redondo 2026-01-20 12:34:11 UTC


*** This bug has been marked as a duplicate of bug 433569 ***