Bug 512837

Summary:	Panels and other elements have wrongly coloured corners.
Product:	[Plasma] plasmashell	Reporter:	Azarilh <azarilh>
Component:	Panel	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	NEEDSINFO WAITINGFORINFO
Severity:	normal	CC:	nate, niccolo.venerandi
Priority:	NOR
Version First Reported In:	6.5.3
Target Milestone:	1.0
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Example 1 Example 1, zoomed in Example 2 Scaling at 100% New user, 2nd picture New user, 1st picture

Description Azarilh 2025-12-01 15:08:30 UTC

SUMMARY


STEPS TO REPRODUCE
The weird corners seem to always be there. However, they tend to be easier to see with a black theme or a white one ( like default light Breeze ). I don't think it's a Breeze problem, cos i have it with a custom one i made a few years ago, as well as with the OpenSUSE themes.

OBSERVED RESULT
Corners have weird colours.

EXPECTED RESULT
Corners should be smooth with no added colour.

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20251127
KDE Plasma Version: 6.5.3
KDE Frameworks Version: 6.20.0
Qt Version: 6.10.1
Kernel Version: 6.17.9-1-default (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 7700 8-Core Processor
Memory: 32 GiB of RAM (30,5 GiB usable)
Graphics Processor 1: AMD Radeon RX 7900 GRE
Graphics Processor 2: AMD Ryzen 7 7700 8-Core Processor
Manufacturer: ASUS

ADDITIONAL INFORMATION
It's been there for a few weeks by now.

Comment 1 Azarilh 2025-12-01 15:09:20 UTC

Created attachment 187285 [details]
Example 1

Comment 2 Azarilh 2025-12-01 15:09:39 UTC

Created attachment 187286 [details]
Example 1, zoomed in

Comment 3 Azarilh 2025-12-01 15:09:51 UTC

Created attachment 187287 [details]
Example 2

Comment 4 Nate Graham 2025-12-11 17:18:45 UTC

What scale factor are you using (if any)?

Does the issue reproduce in a new clean user account on the same computer?

Comment 5 Azarilh 2025-12-12 15:34:35 UTC

(In reply to Nate Graham from comment #4)
> What scale factor are you using (if any)?
> 
> Does the issue reproduce in a new clean user account on the same computer?

Hi, thanks for your time.
I have the scaling at 150% on a 2160p, 32in monitor. If i set it to 100%, the problem mostly disappears, but it's still there, see screenshot "scale at 100.png". The problem persists on a new user as well, and somehow it got even more noticeable there, with a floating panel. See the other two screenshots i am providing named "new user..."

Some things i noticed that help see the problem:
- It's more visible when using a very dark theme and a very dark wallpaper;
- It's more visible with a floating panel.

Comment 6 Azarilh 2025-12-12 15:35:09 UTC

Created attachment 187547 [details]
Scaling at 100%

Comment 7 Azarilh 2025-12-12 15:36:38 UTC

Created attachment 187548 [details]
New user, 2nd picture

Comment 8 Azarilh 2025-12-12 15:38:26 UTC

Created attachment 187549 [details]
New user, 1st picture

Comment 9 Bug Janitor Service 2025-12-27 03:46:36 UTC

🐛🧹 ⚠️ This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information, then set the bug status to REPORTED. If there is no change for at least 30 days, it will be automatically closed as RESOLVED WORKSFORME.

For more information about our bug triaging procedures, please read https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging.

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