Originally Posted by RobG
It looks like the 12 inch screen has been a mess since the system launched and that there is still no correct fix for it:

https://5thgenrams.com/community/threads/12-inch-screen-blackouts-after-going-in-reverse.9425/



Interesting, the last post in that thread. from April of this year, states

"OTA update to version 19 fixes the screen blackout issue (and others). "

Seems there is a fix.