Just curious if you are using v1.20 to test. If not, see if that makes a difference. It does on the Go.
Yes using, 1.20.2 and the same issue exists on 1.20.1. I can also replicate the problem on two seperate machines with different headsets. At the moment we are usuing an old version of firefox but it continually suggests to update. The issue seems to be firefox / KRPano related as momento360 files work fine with VR. This issue exists for me on files created via KRPan and all KRPano examples on the site.