Bug 482548

SUMMARY
(Not a crash)

Since KDE 6 update, icons-only taskbar behavior has changed. Pinned icons move around the list if launched, sometimes creating a duplicate icon for themselves. I have seen duplicate instances of an app running somehow and have not been able to reproduce that reliably. Sometimes, if something is launched another icon might disappear from the taskbar. 

More specifically: Most of my pinned icons are Google Chrome web apps. (examples are GMail, Google Calendar, Drive, a few other web apps for SaaS tools I use.) The pinned icon for Google Chrome most often disappears when launching one of these web apps. However, there are other things happening that are hard for me to track and observe as well.

I unpinned and repinned these icons, I removed the applet and replaced it adding all the icons again, I've taken updates and restarted, I've looked at settings to see if any are relevant (doesn't appear so). Discover indicates I'm totally up to date.

STEPS TO REPRODUCE (I had icons on it already, but it's the same if they are removed and added back)
1.  Launch an application by single clicking an icon on task manager


OBSERVED RESULT
Observe strange behaviors: disappearing icons, icons jumping around, duplicate application instances etc.

EXPECTED RESULT
application launch with no other results

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: KDE Neon 6.0
(available in About System)
KDE Plasma Version: 6.0.0
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2

ADDITIONAL INFORMATION

Very similar to previously-resolved, year old bug 385594 launchInPlace is broken from libtaskmanager; causes Icons-Only Task manager icons to jump around: https://bugs.kde.org/show_bug.cgi?id=385594