I seem to have the same problem you had. I WANT the HUD controls to show when I’m in external view. Have the option set to FULL (in the new Assistance area) and still no controls.
Any idea how you got yours to come back? I have cleared all community folder addons, restarted a bunch of times, gone into those settings a bunch of times, and still nothing.
Boo… (and thanks for any other help / pointers)