I've encountered this as well. It's a painful experience because the upper nav at this point have disappeared, so now you have to click on the upper section of the screen to get the nav menu back.
This leads me down a rabbit hole of, let's improve the upper nav. The upper nav should have options to persist no matter what. Am I the only one that would like to have the upper nav persist and not disappear after 5 seconds?
It's a painful experience when I need to get into music, nav, camera or calendar that I have to touch the upper portion of my screen then wait 2 seconds for the crappy graphics to slowly show the nav menu.
The walkaround to OP's post is don't put the car in reverse so quickly, not until your wife gets in the car