Bug 514336

Summary:	Changing the transparency for inactive windows to some low value and back to 100% doesn't re-render the whole screen
Product:	[Plasma] kwin	Reporter:	postix <postix>
Component:	effects-various	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	REPORTED ---
Severity:	normal
Priority:	NOR
Version First Reported In:	6.5.4
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description postix 2026-01-08 16:53:31 UTC

STEPS TO REPRODUCE
1. Open a few apps
2. Open System Settings -> Workspace Effects -> Transparency
3. Set transparency from 100% to 10%. Hit Apply. Set it back to 100%.

OBSERVED RESULT
Everything stays transparent. When you move the dialog window, damage tracking kicks in and re-renders parts fully opaque again.

EXPECTED RESULT
Everything is rendered opaque directly.


SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 43
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.21.0
Qt Version: 6.10.1
Kernel Version: 6.18.3-200.fc43.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 PRO 5850U with Radeon Graphics
Graphics Processor: AMD Radeon Graphics

Comment 1 postix 2026-01-08 16:54:04 UTC

> Set it back to 100%.
... and hit "Apply".