VR stereo on Quest 2 not working in version 1.22

Using stereo panoramas and vtour-vr.config, V.1.22 tools builds a tour that does not go into immersive VR mode on the Quest 2 -- it displays a shifted 'fake VR' pair instead.

I remember that this is the case also for earlier krpano versions. I also remember that there is some secret xml edit that made it work -- but I can't remember what that is. If you know, please refresh my memory.

Or could this be an https issue?

-- Tom

OK, I retract the question. It is an https issue. With a proper localhost or https URL, the Quest 2 shows the stereo tour correctly.