Bug 456057 - Transparent windows stuck in desktop
Summary: Transparent windows stuck in desktop
Status: RESOLVED FIXED
Alias: None
Product: kwin
Classification: Plasma
Component: compositing (show other bugs)
Version: 5.25.1
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-06-28 00:00 UTC by Heitor Toledo
Modified: 2023-05-13 19:25 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed In:

Attachments
Demonstration of the phenomenon (2.78 MB, image/png)
2022-06-28 00:00 UTC, Heitor Toledo 		Details
Demonstration of the phenomenon 2 (2.39 MB, image/png)
2022-06-29 19:07 UTC, Heitor Toledo 		Details
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Description Heitor Toledo 2022-06-28 00:00:41 UTC 
Created attachment 150209 [details]
Demonstration of the phenomenon

SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***

Sometimes, after closing a program, its window will remain stuck in the desktop with some transparency, as if it wasn't fully closed. It's not functional and you can't interact with the program.

Curiously, if you try to, for example, click and drag on your wallpaper, the effect created by the cursor goes "behind" the window. Pressing "Show Desktop" or entering edit mode also hides the window temporarily.

STEPS TO REPRODUCE
1. Unfortunately, I have seen this happening a few times, but I don't have steps to reproduce it. Seems to be non-deterministic. :( I remember this used to happen a lot in the past, then for some time I didn't observe this behavior, but now it happened again.

OBSERVED RESULT
There will be no stuck transparent window on my desktop when closing a window.

EXPECTED RESULT
The window completely disappears.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch Linux, kernel version 5.18.6-arch1-1 (64-bit)
KDE Plasma Version: 5.25.1
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.5

ADDITIONAL INFORMATION
None
Comment 1 Nate Graham 2022-06-28 18:44:29 UTC 
Can you upgrade to 5.25.2 and see if it's fixed?
Comment 2 Heitor Toledo 2022-06-28 19:01:35 UTC 
I've just upgraded, I will continue using it and report if I experience the issue again.
Comment 3 Heitor Toledo 2022-06-29 19:06:54 UTC 
I confirm the bug is still present. Got a stuck Discord window this time.
Comment 4 Heitor Toledo 2022-06-29 19:07:56 UTC 
Created attachment 150272 [details]
Demonstration of the phenomenon 2
Comment 5 Nate Graham 2022-06-30 16:29:25 UTC 
Thanks. Sorry to hear that it's still happening. Are you using X11 or Wayland?
Comment 6 Heitor Toledo 2022-06-30 16:35:39 UTC 
I'm currently using X11. But I don't mind switching to Wayland and testing it there as well.
Comment 7 p d 2022-07-23 01:42:05 UTC 
I have this issue with Fedora KDE on Wayland, with Intel graphics. It usually happens when I'm moving a window and it disappears as I'm moving it, and a transparent version of it gets stuck on the desktop.

Operating System: Fedora Linux 36
KDE Plasma Version: 5.25.3
KDE Frameworks Version: 5.96.0
Qt Version: 5.15.3
Kernel Version: 5.18.11-200.fc36.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-7300U CPU @ 2.60GHz
Memory: 7.5 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 620
System Version: ThinkPad T580
Comment 8 p d 2023-05-13 10:39:36 UTC 
this no longer happens for me
Comment 9 Heitor Toledo 2023-05-13 19:25:20 UTC 
Yeah, I also haven't seen this bug again. Thanks to everyone who was involved in fixing this.