Semi recently I updated my Minecraft it 1.13 and immediately it asked my to fix my screen size which I did, and got into my realm, but then I noticed that the whole screen is shifted up about 1 cm. The hot bar, touch buttons, chat, and the game itself are shifted up, luckily Minecraft renders stuff that you can’t see so there is no black bar. I’m on iPad Pro 2018, in case that helps.