Bug 513772 - New Window Taskbar Icon Appears on All Screens in Multi-Monitor
Summary: New Window Taskbar Icon Appears on All Screens in Multi-Monitor
Status: REPORTED
Alias: None
Product: plasmashell
Classification: Plasma
Component: Task Manager and Icons-Only Task Manager widgets (other bugs)
Version First Reported In: 6.5.4
Platform: NixOS Linux
: NOR normal
Target Milestone: 1.0
Assignee: Plasma Bugs List
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-12-24 07:50 UTC by Yiqun Lian
Modified: 2025-12-24 07:50 UTC (History)
1 user (show)

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Description Yiqun Lian 2025-12-24 07:50:09 UTC 
When launching any application on a multi-monitor setup in KDE, the app briefly appears in the taskbar on all screens, even though the setting is configured to show windows only on the current screen. The taskbar icon disappears correctly once the app window fully launches.

STEPS TO REPRODUCE

Set KDE taskbars to “Show only windows from the current screen.”

Connect a multi-monitor setup.

Launch any application.

OBSERVED RESULT
The app briefly appears in the taskbar on all screens before disappearing from the others.

EXPECTED RESULT
The app should only appear in the taskbar of the screen where it was launched.