Screen devided at 50th parallel

My iOS screen is cut off at the 50th parallel, almost split! What's going on there? Both iPhone and iPad, but only in app, not with browser.

User 217641103
Got it: ICON CH reaches max. up to the 50th! Turned it off, everythin's fine!

User 217641103
Thank you. That's exactly it – different combinations of models don't necessarily have to be consistent with each other, but that's normal and logical. A model is just a model, not reality.