I just stumbled on this “hack”. I was kinda excited about it at first, but it looks like it’s no longer very useful for the rear camera since now the background on the rear camera screen is dramatically dimmed, so much so that it’s nearly unreadable.
I wonder if Tesla changed this as part of the recent software update that added the option of showing the side cameras on the screen along with the rear camera.(?)
It still works with the energy screen, charging screen, and settings menu, but those aren’t really useful to have up on just part of the screen. And it does NOT appear to work with the browser, which can’t be dragged down.
(Model 3; 2020.28.6)