Help! My desktop disappears!
Some users report an issue where the main display turns black once they engage a full screen teleprompter window. This problem is caused by a setting in the Mission Control
panel.
The fix is very simple and takes only a few seconds:
First open the the macOS System Preferences
and select the Mission Control
panel.
Then make sure that the box next to Displays have separate Spaces
is checked.
This will fix the disappearing desktop issue.