Run the attached small test on an Ubuntu 14.04 (which is latest LTS released) with Gnome 3 which is not default though.
All it attempts to do is, just create, show and make fullscreen a Frame. Exit after 3 seconds.
No fullscreen window will be visible.
It works well on Unity but not on Gnome 3.
Fast clicking on Activity button in the north-west corner would show you this application with apparently fullscreen Frame as if existing somewhere but never available.