Bug 513891

Summary: Popup with window preview for icon task manager can randomly popup on touch devices and then it's completely uncloseable and may cover huge screen areas
Product: [Plasma] plasmashell Reporter: Ellie <el>
Component: Task Manager and Icons-Only Task Manager widgetsAssignee: Plasma Bugs List <plasma-bugs-null>
Status: REPORTED ---    
Severity: normal CC: josh, kde, kdedev, nate, qydwhotmail
Priority: NOR    
Version First Reported In: 6.5.4   
Target Milestone: 1.0   
Platform: Other   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Screenshot showing the popup that cannot be closed on touch devices

Description Ellie 2025-12-27 20:08:00 UTC
Created attachment 188023 [details]
Screenshot showing the popup that cannot be closed on touch devices

SUMMARY

See screenshot, sometimes on touch plasma seems to imagine a non-existant mouse cursor and just open up the giant window previews with no way to close them. Tapping other areas of the screen will not close them.

STEPS TO REPRODUCE

1. Use KDE on a touch device

OBSERVED RESULT

See screenshot

EXPECTED RESULT

No giant window previews when I didn't tap a taskbar icon just before. And when I make them come up intentionally, they should go away once I tap somewhere else on the screen. This doesn't seem to work reliably. I'm not aware of any workaround, which seems to make this a relatively severe issue in terms of practical impact.

SOFTWARE/OS VERSIONS

Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: postmarketOS Edge
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.21.0
Qt Version: 6.10.1

ADDITIONAL INFORMATION
Comment 1 Nate Graham 2026-01-05 21:03:37 UTC
Josh, do you think could this be caused by there being separate mouse and touch pointers under the hood?
Comment 2 Ellie 2026-01-09 19:00:15 UTC
For what it's worth, I've seen other applications have similar issues, e.g. tooltips show up in locations and when I tap elsewhere the tooltip just never goes away and covers screen areas. Perhaps this is a KWin issue...?