I found that this happened when I turned on (in Compiz settings manager) checkbox for the "Desktop wall" on the last tab in settings, I suppose it is called something like "change desktop when dragging windows to the screen edge/border". When I turn this option off, the panel/menus/windows buttons start working normally.
I found that this happened when I turned on (in Compiz settings manager) checkbox for the "Desktop wall" on the last tab in settings, I suppose it is called something like "change desktop when dragging windows to the screen edge/border". When I turn this option off, the panel/menus/windows buttons start working normally.