Bug 156133

Version:            (using Devel)
Installed from:    Compiled sources

I noticed, that sometimes one or more tasks are not displayed (maybe has been introduced with the commit of bug 154741).
This happens, when
- use "kwin --replace" (all tasks are not displayed)
- use "wheel over window title" or send a window to a desktop

This behaviour stays until the desktop is changed by using the pager.
So if I have 3 windows on desktop 1 and no windows on desktop 2 and then select window c on desktop 1, sent it to desktop 2 (task menu), then select window b use the mouse wheel to move it to desktop 2 (and automatically switch there, too), then the taskbar on desktop 2 will not show any tasks. using the mouse wheel with window b again to switch back to desktop 1 shows, that there will only window a be shown in the taskbar.

This stays until the pager has been used.