Version: unspecified (using KDE 4.6.1) OS: Linux Having a taskbar launcher, and launching the corresponding application, makes the launcher dissappear, as expected. Now, if I change to another virtual desktop (having the same set of widgets for all my virtual desktops), makes the launcher appear again (seems normal, as there is no instance of the app in this desktop). But when I go back to the previous desktop, where there is already an instance of the application, the launcher does not hide again, it remains visible in the taskbar. The expected behavior should be that the launcher hides again, as there is an instance of the app in this virtual desktop. Reproducible: Always
I can confirm this issue.
*** This bug has been marked as a duplicate of bug 264914 ***