Blank Screen in (iOS) companion if adding any navigator

If I add any navigator to my Thunkable X project the whole screens disappear and I only get a blank white screen… Once I remove it I can see the set screens again… Happens in an existing as well as in a completely new project without any other components…

Also is there not even a location sensor or possibility to set the map to my current position?

Update: It seems that the companion app just becomes unresponsive because if I restart it it sometimes works for a little time but after doing some changes (like just changing a screens color) and again white screen and nothing happens… Latest companion (update today, v30 and iOS 11.3)

Thanks for updating this