currently having exact same problem. When I dragged map region, I lost the user location blue dot and need to tap on MapUserLocationButton() show again.

Still broken on iOS 17.0 and Xcode 15-RC I also opened a ticket: [https://developer.apple.com/forums/thread/738381] - [FB13206752]

Did you manage that Annotation tap action to show particular Annotation detail info as a bottom sheet? https://forums.developer.apple.com/forums/thread/747526 https://stackoverflow.com/questions/78079881/why-visionos-has-no-mapkit-annotation-tapping-interaction-support?noredirect=1#comment137659824_78079881

Unfortunately, still continues awfully.