Version: (using KDE 4.0.83) OS: Linux With the KDE panel on the right, zooming into the desktop and then zooming back out places the Desktop Config button (what is this called) under the panel. Opening and then closing the panel config resolves the issue.
Created attachment 25669 [details] Screenshot This screenshot is blown up to x4 to show the button under the panel. You still have to look closely, though.
works perfectly here in trunk; note that you can also click and drag to pan when zoomed out =)