Bug 457608 - Compositor's "keep window thumbnails" option breaks the composition.
Summary: Compositor's "keep window thumbnails" option breaks the composition.
Status: RESOLVED NOT A BUG
Alias: None
Product: kwin
Classification: Plasma
Component: compositing (other bugs)
Version First Reported In: 5.25.4
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-08-08 00:09 UTC by Eter
Modified: 2022-08-08 22:26 UTC (History)
1 user (show)

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Latest Commit:
Version Fixed/Implemented In:
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Description Eter 2022-08-08 00:09:12 UTC
SUMMARY

When I activate that option, the composition of the screen gets wrong. For example, if a plasma panel containing window miniatures auto hides, you are able to see it on the screen but in reality it isn't.


STEPS TO REPRODUCE
1. Activate Compositor's "keep window thumbnails" option.
2. Set up a plasma panel containing miniatures of the windows.
3. Set the plasma panel to auto hide.

OBSERVED RESULT
The compositor does not wipe out the panel from the screen when it hides.

EXPECTED RESULT
The panel should not be printed on the screen when hidden.

SOFTWARE/OS VERSIONS
Arch Linux packages, up to date as of August 8, 2022.

ADDITIONAL INFORMATION
My system uses intel gpu graphics and drivers.
Comment 1 Eter 2022-08-08 00:33:20 UTC
I realized that also panels *not* containing miniatures of the windows remain in the screen after being hidden.
Comment 2 David Edmundson 2022-08-08 08:10:08 UTC
There is a massive warning next to enabling that option.
Comment 3 Eter 2022-08-08 22:18:08 UTC
Sorry I thought that the warning had another meaning. 
It is curious though that I only have that problem in the compositing with plasma panels and not with any other program, including Latte Dock. 
Anyways, have a good one. Cheers.
Comment 4 Eter 2022-08-08 22:26:56 UTC
(In reply to Eter from comment #3)
> Sorry I thought that the warning had another meaning. 
> It is curious though that I only have that problem in the compositing with
> plasma panels and not with any other program, including Latte Dock. 
> Anyways, have a good one. Cheers.

May I report this to Plasma Panels developers or it is not possible to fix?
Thanks.