On Emby Theater 3.0.8 when I play a media file the overlay is missing on the screen.  No back arrow, no playback controls, etc.  The controls are there, however.  When I move my mouse to where they are supposed to be the arrow changes to a hand, indicating the controls are still there (and I can click on them),  they are just not being shown on the screen.   This happens when in DESKTOP display mode.   Another machine running Emby Theater 3.0.6 does not exhibit this problem, so I assume the