I've submitted a bug for this, since no one has responded to my reply. FB22439021

Seems to be working now. for how long? who knows

We're having the same issue and I'm not sure what support we need to reach out to, since I'm not sure they know anything is wrong since the requests return an HTTP 200 status code. Please update this if you find any resolution.

That sample code doesn't show how to create a place from a lat/lng or lookup a place by address, so I'm not sure if it would help my use-case. Even though lat/lng is a 2D point with no heading information, the point were the camera is vs. the requested point creates a line that the camera should be pointing to. The Apple Maps app does this automatically. We're also using Look Around in our iOS app and the heading is calculated there automatically from the same lat/lng we're providing to MapKit JS. See screenshots below: Native app Look Around MapKit JS Look Around

It seems Apple is aware of the issue as seen on this page: https://developer.apple.com/system-status/ Hopefully they'll fix it soon.