Fullscreen at first, but now its gone

When I first installed and ran Onyx it would take over my entire screen.

Now I have the windows Task bar at the bottom and there seems to be no way to get full screen back.

How do I push Onyx into full screen mode? I’ve tried F11 shortcuts, looking through the software, I tried changing my screen scaling from 200% to 150 to 125 to 100…

Nothing I do will get back the Full Screen mode!!

Setting my task bar to Auto hide got back the full screen mode I was missing.