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?

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?