8a6a3968c3
The window overlays may be shown erroneously if hideOverlays is called while the corresponding clone has an uncompleted tween which calls showOverlays in its onComplete handler, for instance when quickly leaving the overview before the initial overview animation has finished. To fix, remove all existing tweens when hiding the overlays. https://bugzilla.gnome.org/show_bug.cgi?id=666020