Android 15 problem?

So after I updated to android 100 I got this task bar on top of my screen when playing Pokemon go, as if it doesn't want to go Fullscreen. I have tried finding a setting to change it but with no luck. Anyone else have the same problem? It's insanely annoying.

So after I updated to android 100 I got this task bar on top of my screen when playing Pokemon go, as if it doesn't want to go Fullscreen. I have tried finding a setting to change it but with no luck. Anyone else have the same problem? It's insanely annoying.