"on screen"-homebutton overlaps layout of our app

Hello, I m one of the developers of the My CM app team (Belgian Health Insurance company). While testing on apple devices that have no physical homebutton, but the on-screen "black bar" we notice some strange behaviour. See picture attached. The phone on the left is a iPhone 13 Pro Max, the one on the right is an iPhone XR. Both have ios 15.2. Both phones have the same build of our app. On the Pro Max the black bar is on top of our layout, on the XR our layout seems to be pushed up a bit. The desired behaviour is the behaviour on the XR. Can somebody give us advice on how to handle this issue? Kind regards, Lode