Bug 319470

Summary: Taskbar entries sometimes tangle up after closing a window
Product: [Unmaintained] plasma4 Reporter: Pascal d'Hermilly <pascal>
Component: widget-taskbarAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED DUPLICATE    
Severity: normal CC: kde
Priority: NOR    
Version: 4.10.2   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Empty spot in taskbar dragged to dolphin.

Description Pascal d'Hermilly 2013-05-07 15:10:23 UTC
This happens 1-2 times a day for me.
After closing a window - the taskbar will be all funny. Two taskbar entries are tangled into each other - and the first taskbar entry is empty without the rest of the taskbar entries falling in to the left.
The only way to change this seems to be to open a new window - e.g. dolphin or kate.
This has happened for me for at least 2 years and with different computers and different profiles (although all Kubuntu).

Reproducible: Sometimes
Comment 1 Pascal d'Hermilly 2013-05-07 15:16:18 UTC
Created attachment 79758 [details]
Empty spot in taskbar dragged to dolphin.

Today I was able to drag from the empty spot on the taskbar into a dolphin window - hoping that it would give some hint of what is causing the trouble. See the data attached. the CLI "file" tool returns that it is a "VMS Alpha executable". I don't know if that is a false positive.
Comment 2 Pascal d'Hermilly 2013-06-03 10:12:40 UTC
Now I have 80% reproduceability on a guest account on my computer. And video showing it.
For some reason It works best if windows are maximized.
1) close all windows
2) Open dolphin via k-menu
3) Open another dolphin via k-menu
4) Open Libreoffice Writer
5) click dolphin1 in taskbar
6) click dolphin2 in taskbar
7) right-click libreoffice writer in taskbar and click close.
result: the first taskbar entry becomes empty.

Video 1: Empty slot in taskbar efter closing window: https://dl.dropboxusercontent.com/u/22090107/20130603_115001.mp4
Video 2: taskbar entries tangling after closing window: https://dl.dropboxusercontent.com/u/22090107/20130603_113811.mp4
Comment 3 David Edmundson 2013-06-05 23:44:25 UTC

*** This bug has been marked as a duplicate of bug 226355 ***