Well, today I learned something. I've gotten my phone stuck in this mode (half of the screen hidden below the bottom edge) and just assumed it was an iOS bug.
That had existed in even in some Android 4 phones from 2013, but you have to turn it on and off all the time and rather clunky.
> To return to the full screen, tap the upper half of the screen.
Great.
Otherwise looks nice, thanks for the link
You can also do the reverse gesture, a small swipe up from the bottom of the screen, to return to full screen.
It’s clumsy UI, and the downward swipe is often mistaken as scrolling.