I have tested on Godot 4.5 and 4.4.1.
I follow all steps on
https://godotvr.github.io/godot_openxr_vendors/manual/meta/scene_manager.html
And yet the function: _scene_data_missing
Constantly gets triggered in a loop, even after _scene_capture_completed has success=true.
This effectively prevents me from closing the app & I have to restart the quest to do anything on it.
Additionally setup_scene never gets called for any anchor.