It is currently only fully tested and working on the Oculus/Meta Quest Browser which is used by the entire Quest line of VR headsets.
We have also tested the Wolvic browser as of 1.4.2, which is used by several other VR headsets. Unfortunately, Wolvic is missing critical WebXR support. Unfortunately, this means the VR portion of our site doesn't work correctly on VR headsets that use that browser, do to that missing WebXR support.