Bug 444107

Summary:	Thumbnails frequently missing in Task Manager on Wayland
Product:	[Plasma] plasmashell	Reporter:	Lyubomir <liubomirwm>
Component:	Task Manager and Icons-Only Task Manager widgets	Assignee:	Eike Hein <hein>
Status:	RESOLVED FIXED
Severity:	normal	CC:	aleixpol, bugseforuns, iodreamify, nate, oiiu19, plasma-bugs-null, qydwhotmail, vlad.zahorodnii
Priority:	NOR	Keywords:	wayland-only
Version First Reported In:	5.23.1
Target Milestone:	1.0
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:	5.24
Sentry Crash Report:

Description Lyubomir 2021-10-20 12:50:19 UTC

SUMMARY
When i move the cursor between/over different apps the thumbnails are frequently missing. I recorded it.

STEPS TO REPRODUCE
Please see the screencast here: https://youtu.be/8yBZ0ucsDC8

EXPECTED RESULT
Thumbnails not missing.

SOFTWARE/OS VERSIONS
Operating System: Kubuntu 21.10
KDE Plasma Version: 5.23.1
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2
Kernel Version: 5.13.0-20-lowlatency (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i5-8250U CPU @ 1.60GHz
Memory: 7,6 GiB of RAM
Graphics Processor: Mesa Intel® UHD Graphics 620

Comment 1 Patrick Silva 2021-10-20 20:23:16 UTC

Can reproduce on Arch (Plasma 5.23.1) and neon unstable.
On my systems Plasma even crashes sometimes, as reported in bug 439681.

Comment 2 Fushan Wen 2021-10-24 12:38:43 UTC

Can always reproduce on Wayland.

kf.plasma.quick: Couldn't create KWindowShadow for ToolTipDialog

Comment 3 Nate Graham 2021-11-23 18:55:13 UTC

*** Bug 445461 has been marked as a duplicate of this bug. ***

Comment 4 Nate Graham 2022-01-12 17:50:12 UTC

This should be fixed in Plasma 5.24 with the pipewire buffer size fix recently.

Comment 5 Patrick Silva 2022-01-14 16:21:31 UTC

This bug persists with windows grouped in the task manager.

Operating System: Arch Linux
KDE Plasma Version: 5.23.90
KDE Frameworks Version: 5.90.0
Qt Version: 5.15.2
Graphics Platform: Wayland

Comment 6 iodreamify 2022-12-15 01:19:30 UTC

(In reply to Patrick Silva from comment #5)
> This bug persists with windows grouped in the task manager.

Still hitting this bug with the conditions mentioned 

Operating System: Arch Linux
KDE Plasma Version: 5.26.4
KDE Frameworks Version: 5.101.0
Qt Version: 5.15.7
Graphics Platform: Wayland