I want to get the MainCamera's Position after switching from Bounded to Unbounded

I switch from Bounded to Unbounded by changing the Volume Window Configuration of the VolumeCamera.
I then want to get the Position of the MainCamera, but it is (0, 0, 0).

I have two log outputs from VisionOSSessionSubsystem, “AR data provider state changed. New state is Paused” and “AR data provider state changed. New state is Running”.

This seems to be caused by trying to get a Position at the timing of Paused, but is it possible to detect that it has become Running?

we having the same issue