This is not a big deal but curious to as of why?
When map page is in 3D view and you go under a overpass that is say 200 meters or longer the map orientation tilts from a 3D view to a directly overhead view and then back again once you are no longer under the overpass.
When map page is in 3D view and you go under a overpass that is say 200 meters or longer the map orientation tilts from a 3D view to a directly overhead view and then back again once you are no longer under the overpass.