Thank you for clarifying ARAnchor usage. However, do you have any insight on the issue at hand? The behavior of ARWorlMap-based relocalization has clearly changed (or broken) in iOS 15, breaking an important relocalization-based feature in our application that was otherwise working before iOS 15. Running an ARSession using the initialWorldMap from a previous session in the configuration no longer leads to a session that has a shared coordinate system with the previous session (although it did in iOS 14). Is this an issue that the ARKit team is aware of and looking into?

Following up on my previous question -- this is a time-sensitive and important issue for us since it breaks an important feature app. Do you know when we can expect a fix for this issue?