I work at a school with 25 Lenovo Mirage VR S3 headsets. We have been using Firefox reality to watch YouTube videos by using the http://youtube.com site rather than http://m.youtube.com with no trouble to watch 360 videos. The videos would play perfectly, although occasionally you would have to change it from 360 Stereo to 360 mode.
Recently, I updated the headsets to version 12.2 of the Firefox Reality App and Youtube will no longer play YouTube videos in 360 using the desktop site. You get a fully white screen with a small triangle with part of the video in it. The App will play videos in the mobile site, but they are distorted and stretched which was the same before installing the update. You only get part of the video using the mobile site.
Is there a way to revert to a previous version of Firefox Reality, or to resolve the problem?