GNOME Bugzilla – Bug 694083
layout: Does not handle _NET_WM_FULLSCREEN_MONITORS
Last modified: 2013-02-23 19:46:25 UTC
When a window is fullscreen on multiple monitors using _NET_WM_FULLSCREEN_MONITORS we do not mark the correct monitors as fullscreen in _updateFullscreen()
That functionality is used in gnome-control-center when a tablet is set to cover the area of all the monitors. The calibration window would then be fullscreen on all the monitors.
*** This bug has been marked as a duplicate of bug 646861 ***