While #phosh handles centered notches and rounded corners out of the box (as long as there's device info in gmobile) we didn't handle notches on the right or left display corners at all yet..
A merge request from Eugene Lepshy to add support for the #nothingphone 1 made that very obvious so I cooked some inital MR to fix this (screen shot is from a nested phosh session as I don't have such a device):