I often use my XS MAX for navigation in lanscape mode using local app called Yanosik. When phone call comes, the screen goes to call display mode, and if the call is long, it gets dark and locked. After the call is finished the display remains dark and locked, so I have to go back to Yanosik manually. To unlock the phone I have to key in my code because FaceID does not work in landscape mode. It shouldn't be really difficult to have it working, but maybe I am one of very few that need it.
Yeah, I get you on this one and I can imagine how it would be frustrating. Hopefully on the next iPhone.