Version: (using Devel)
Installed from: Compiled sources
OS: openSUSE 11, KDE 4.0.82-6.1
Turn on Desktop Grid effect and set task manager to show windows from current desktop only.
When using the desktop grid, all windows open are shown in the task manager on each of the desktop shown. It would make more sense if each desktop only showed windows that belonged to that desktop in their respective task managers.
*** This bug has been marked as a duplicate of 158120 ***