i just notice when doing a local.player hide that the avatar was not hidden. I checked in FT and got the same, when someone's frozen and stuck to some other player. Is it due to my settings or is it the normal way? If so how would you hide the avatar too?
That is a "normal" game bug. It happens with and without the reborn patch.
And I don't think there is a way to fix it serverside. I'm pretty sure that headicon sprite is added on the client side.