When I get on minecraft and join with my account that has nintendo switch online and a microsoft account that automatically logs in when I am at the minecraft home screen. It does does not bring me to the home screen but a blank screen with nothing but black. When I go on my other nintendo account without a nintendo switch online membership or microsoft account I can join the home menu and create new worlds. I would guess that this is an issue with microsoft accounts because every other game that I use nintendo switch online with works and is fine. Please fix this soon!