Bug 448848

Summary: Application launchers may appear during Overview as invisible windows
Product: [Plasma] kwin Reporter: Mahe <mahe>
Component: effects-overviewAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal CC: nate
Priority: NOR    
Version First Reported In: git-stable-Plasma/5.24   
Target Milestone: ---   
Platform: Neon   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: screenshot showing the invisible window created by Kickoff in effects-overview

Description Mahe 2022-01-20 19:46:46 UTC
Created attachment 145675 [details]
screenshot showing the invisible window created by Kickoff in effects-overview

SUMMARY
The Kickoff application launcher (and its alternatives) may be triggered while the Overview effect is active using their hotkey and will show up as an invisible window in the Present Windows effect that is part of the Overview.

STEPS TO REPRODUCE
1. enable Overview effect
2. trigger Overview via hotkey (default: Super+W)
3. press the Kickoff hotkey (default: Super) while in Overview

OBSERVED RESULT
An invisible window (i.e. no thumbnail/preview, only icon) called "Plasma" is added to the Present Windows effect in Overview. It interprets the Kickoff launcher triggered by the Super key as a dedicated window and presents it.

EXPECTED RESULT
Either the Kickoff launcher is prevented from being triggered while Overview is active or the Overview's Present Windows effect ignores any Plasma launcher window (or even both).

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: KDE neon Unstable Edition
KDE Plasma Version: 5.24.80
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.3

ADDITIONAL INFORMATION
Also affects the two Kickoff alternatives (Application Menu, Application Dashboard) that can be selected.
Comment 1 Nate Graham 2022-01-20 23:53:48 UTC

*** This bug has been marked as a duplicate of bug 446624 ***