Original Post — Direct link
over 3 years ago - /u/JagexPoerkie - Direct link

In android 11 google has made some changes in how screen space is defined and whether It's safe for us to draw the game on it so that you can see it. (Notches, different screen sizes, menu bars etc).

It's something we're aware off and actively lwork on resolving, but it is not an easy fix.