Bug 511412

Summary:	Blur effect is broken completely (Plasma 6.5.1)
Product:	[Plasma] plasmashell	Reporter:	kaminata <linux_rulez>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	kde, nate
Priority:	NOR
Version First Reported In:	6.4.5
Target Milestone:	1.0
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description kaminata 2025-10-31 09:20:30 UTC

SUMMARY
Hello,
After upgrading to Plasma 6.5.1 I have a strange problem with the blur effect. My contect menu is light blue and I can't find a way to fix it. My panel is light blue as well.
https://i.imgur.com/Z6xMgvW.png
https://i.imgur.com/xcoTcBd.png
Changing to Breeze doesn't fix the problem:
https://i.imgur.com/uppITmn.png
It's only ok when I disable the Blur effect but it's ugly and want to use the Blur:
https://i.imgur.com/IQBvTzU.png
I tried different Blur settings to no avail.

STEPS TO REPRODUCE
1. Turn on the Blur effect and panel and context menus gets Light Blue.
2. 
3. 

OBSERVED RESULT
The panel and context menus gets Light Blue.

EXPECTED RESULT
The panel and context menus shouldn't get Light Blue.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.5.1
KDE Frameworks Version: 6.19.0
Qt Version: 6.10.0
Kernel Version: 6.17.5-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 32 × Intel® Core™ i9-14900KF
Memory: 64 GiB of RAM (62.6 GiB usable)
Graphics Processor: NVIDIA GeForce RTX 4090
Manufacturer: ASUS

Comment 1 kaminata 2025-10-31 13:25:17 UTC

I have a backup before the update and everything looks as it should:
https://i.imgur.com/lqBNpMD.png
https://i.imgur.com/WbqN6Pt.png

After I update and the problem appears. Tried both X11 and Wayland and it's the same.

Comment 2 Nate Graham 2025-10-31 18:16:35 UTC

The root cause is Bug 510818. It'll be fixed in Plasma 6.5.2.

*** This bug has been marked as a duplicate of bug 510818 ***

Comment 3 kaminata 2025-10-31 19:38:51 UTC

(In reply to Nate Graham from comment #2)
> The root cause is Bug 510818. It'll be fixed in Plasma 6.5.2.
> 
> *** This bug has been marked as a duplicate of bug 510818 ***

Thank you!