Bug 487108

Summary:	Session hangs for several seconds when opening the overview while except when there's at least one maximized window
Product:	[Plasma] kwin	Reporter:	me
Component:	effects-overview	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	REPORTED ---
Severity:	normal
Priority:	NOR
Version First Reported In:	6.0.4
Target Milestone:	---
Platform:	Fedora RPMs
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description me 2024-05-16 14:20:49 UTC

SUMMARY
When I have all normal windows and I try to open up the overview, the whole session freezes for about 30 seconds. If at least one of the windows is maximized, the overview opens up fine. This bug also happens with only one non-maximized window and if there are some maximized windows but there's a floating window that's pinned to all desktops.

STEPS TO REPRODUCE
1. Have all floating windows or one pinned window
2. Trigger the overview

OBSERVED RESULT
The session hangs for about 30 seconds.

EXPECTED RESULT
The session should not hang and the overview should come up immediately.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora KDE 40
(available in About System)
KDE Plasma Version: 6.0.4
KDE Frameworks Version: 6.2.0
Qt Version: 6.7.0