https://bugs.kde.org/show_bug.cgi?id=475375
Bug ID: 475375
Summary: Ghost duplicate buttons in Task Manager
Classification: Plasma
Product: kwin
Version: 5.27.8
Platform: Gentoo Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: martin-ko...@protonmail.com
Target Milestone: ---
Created attachment 162165
--> https://bugs.kde.org/attachment.cgi?id=162165&action=edit
Duplicates in taskbar
SUMMARY
***
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STEPS TO REPRODUCE
1. Boot
2. Start Firefox which restores multiple windows at once very quickly
3. Happens almost always on fresh boot
OBSERVED RESULT
Have duplicates in Task Manager/task bar. See screenshot. The Firefox has
opened 8 windows plus 1 Alacritty, There are duplicates for the Firefox windows
The duplicates are always on the left.
There can be more duplicates. See screenshot: 1 true Alacritty, two duplicates.
Sometimes some of them disappear but not all after some interactions with
taskbar.
Sometimes they turn blank or just the title is clears.
right clicking them shows a menu with grayed out close option.
EXPECTED RESULT
No duplicates or ghost windows in task bar
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma: 5.27.8
(available in About System)
KDE Plasma Version: 5.27.8
KDE Frameworks Version: 5.110.0
Qt Version: 5.15.10
ADDITIONAL INFORMATION
Also sometimes random crashes of kwin when activating a window via task bar
which might be related.
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