I've setup the demos in a clean checkout with a nginx reverse proxy doing SSL termination and it almost works perfectly. In the basic and tracked controller demo, however, users (including VR headsets) can connect to the room and see the other players, but after a little while some of the other avatars disappear from view (but not from the occupants array). It's often very disjoint as to who can still see who. Reloading the page fixes things for a little while.

There is an error on the console about this.data being undefined in networkUpdate(), but it appears before the users start disappearing. There don't appear to be any console messages when the avatars go missing.

Any ideas for what might be happening?