Even under IOS15.3 Final (available since 26.01.2022) the error still occurs with me. The focus does not switch off "when I leave this place". I have reset "Location and Privacy" and all permissions have been reissued. Unfortunately without success.

I can confirm that the location-based focus trigger ("Until I leave this place") works again since installing IOS 15.5 - which it did not in the previous versions of 15.*.