This seems like the issue I'm coming up against with my projected and posted here https://developer.apple.com/forums/thread/831248 I do find it rather rather strange we cannot access a core macOS service, maps directly without using temporary entitlements, but then they are not app store compliant as I found out

This is the rendering I get with either MKMapSnapshotter OR MKMapView Tahoe 26.5.1 Entitlements: