Bug 509980

Summary:	KDE Plasma Panel does not keep opaque options active. - PANEL
Product:	[Plasma] plasmashell	Reporter:	Gilberto Ferreira <gilberto.nunes32>
Component:	Panel	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	RESOLVED DOWNSTREAM
Severity:	normal	CC:	kdedev, niccolo.venerandi
Priority:	NOR
Version First Reported In:	6.4.5
Target Milestone:	1.0
Platform:	Kubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Gilberto Ferreira 2025-09-27 01:52:48 UTC

SUMMARY
I am using Kubuntu 25.10.
But this bug is around for a while now.
This is not critical, but is anoying.
When right click on panel, going to show panel configuration and the choose Opaque instead Translucidy, after close the panel configuration dialog, the panel does not turn into opaque.
Here's a video about it:

https://www.youtube.com/watch?v=eXuufRK1_5E

STEPS TO REPRODUCE
1. Kubuntu fully upgrade (09/26/2025)
2. Try to change the opacity of the panel, from translucidy to opaque.
3. 

OBSERVED RESULT
Doesn´t keep the opaque option but get back to translucidy

EXPECTED RESULT
To keep opaque

SOFTWARE/OS VERSIONS
Operating System: Kubuntu 25.10
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.2
Kernel Version: 6.16.9-x64v3-xanmod1 (64-bit)
Graphics Platform: X11
Processors: 12 × AMD Ryzen 5 5625U with Radeon Graphics
Memory: 64 GiB of RAM (62.2 GiB usable)
Graphics Processor: AMD Radeon Graphics
Manufacturer: Positivo Bahia - VAIO
Product Name: VJFE69F11X-B0411H
ADDITIONAL INFORMATION

Comment 1 TraceyC 2025-09-29 16:24:59 UTC

Thank you for the bug report, and the video that shows what's happening. 

I'm not able to reproduce this on Plasma built from git-master, or version 6.4.5 on Solus
Can you reproduce this with a brand new user and the default panel?

Comment 2 Gilberto Ferreira 2025-09-29 16:29:10 UTC

(In reply to TraceyC from comment #1)
> Thank you for the bug report, and the video that shows what's happening. 
> 
> I'm not able to reproduce this on Plasma built from git-master, or version
> 6.4.5 on Solus
> Can you reproduce this with a brand new user and the default panel?

It's seems a bug only related with Kubuntu.
I already used VoidLinux and ParchLinux as well ArchLinux and Alpine, and there is no such bug.

Comment 3 TraceyC 2025-09-29 19:08:40 UTC

If this is only present in Kubuntu, it may be due to something they have in their setup. If you can reproduce this with a brand new user, it's probably an old config file, conflicting with modern code. Otherwise it will be due to something Kubuntu is doing.

This is something that should be reported to Kubuntu. See

https://kubuntu.org/support/

Comment 4 Gilberto Ferreira 2025-09-29 19:31:24 UTC

(In reply to TraceyC from comment #3)
> If this is only present in Kubuntu, it may be due to something they have in
> their setup. If you can reproduce this with a brand new user, it's probably
> an old config file, conflicting with modern code. Otherwise it will be due
> to something Kubuntu is doing.
> 
> This is something that should be reported to Kubuntu. See
> 
> https://kubuntu.org/support/

That video on youtube is alread a new user!

Comment 5 TraceyC 2025-09-29 19:42:59 UTC

(In reply to Gilberto Ferreira from comment #4)
> That video on youtube is alread a new user!

Well, that rules out an old setting being the cause, and this is something Kubuntu is doing.