Bug 510485 - Hot corner highlights in Breeze are all black with Qt 6.10.0
Summary: Hot corner highlights in Breeze are all black with Qt 6.10.0
Status: CONFIRMED
Alias: None
Product: kwin
Classification: Plasma
Component: effects-various (other bugs)
Version First Reported In: 6.4.5
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL: https://bugreports.qt.io/browse/QTBUG...
Keywords: regression
Depends on:
Blocks:
 
Reported: 2025-10-11 09:24 UTC by Tech-Tac
Modified: 2025-10-13 19:31 UTC (History)
2 users (show)

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Description Tech-Tac 2025-10-11 09:24:36 UTC 
SUMMARY
The Highlight Screen Edges and Hot Corners effect now only renders black highlights in Breeze as of the latest Arch packaging in October 11th 2025 as compared to two days before on Qt 6.9.2 and dependent KDE versions which worked as intended.

Can reproduce in a new user account.

STEPS TO REPRODUCE
1. Upgrade Qt and KDE packages to the latest versions as of 25-10-11 9AM UTC
2. Restart/re-login
3. Move the mouse near a configured hot corner with the Breeze Plasma style.

OBSERVED RESULT
Corner and edge highlights are black.

EXPECTED RESULT
Should be accent colored as in previous versions.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux
KDE Plasma Version: plasma-desktop 6.4.5-4
KDE Frameworks Version: 6.18.0
Qt Version: 6.10.0
Comment 1 Nicolas Fella 2025-10-12 15:37:30 UTC 
This is because of https://bugreports.qt.io/browse/QTBUG-141102