Hubs avatars don't appear

[jdm]

Connecting to a Hubs room from Servo and Firefox simultaneously shows the Servo client in Firefox, but not the Firefox client in Servo. Some testing has revealed that the a-entity for the networked avatar has the correct position, and creating a separate entity with some primitive geometry and constantly updating its position to match the actual entity makes the geometry move around the scene as expected.

[jdm]

I managed to make the avatar show up by adding a user script that sets the visible property of the entity to true. Now to figure out why that's needed in Servo!

[jdm]

This doesn't even require another client to connect. If you look down at the ground in Firefox, you'll see the default avatar around the camera. If you do the same in Servo, there's no trace of it.