Did you find any solution for this?? I'm facing a similar issue. I've added an overlay layer in MKMapView, and I'm loading custom tiles from a URL in the loadTile(at path:) method. everything works fine, and I received success responses in every case(initial view or on zoom) and the custom overlay rendered correctly. However, I encountered an issue after adding the line mapView.setRegion(region, animated: true) to set the initial map region. After doing this, I receive a 400 error in response of loading overlay in loadTile(at path:) when zooming on the map, and the custom tiles fail to load. Is there something wrong with the setRegion method, or could there be another reason for this issue?

Awaiting for Suggestions to resolve this error

https://drive.google.com/file/d/1nVFV9mitLhn5O0HlJ_RqFMLZeU_oxncd/view?usp=sharing