Version: (using KDE 4.3.0) Installed from: Debian testing/unstable Packages 1) Open a maximized window in desktop 1. 2) Switch to a desktop 2. 3) Place the cursor over a widget -> widget handle appears 4) Switch to desktop 1. 5) Move mouse cursor (so that it is no longer above where the widget is). 6) Switch back to desktop 2. -> Widget handle is still there. It will remain present (until you run your cursor in and out of the widget). It's only annoying in the sense that it makes you wonder "now why is that handle showing" for a moment. And yes, I did notice this under normal use, it wasn't completely contrived :-).
*** This bug has been marked as a duplicate of bug 193653 ***