"It's taking me higher, HIGHER off the ground"
Ahh, anyway..
It seems you are the one bugged. Not him. You received a syncing issue with him through the network issue, he was properly synced to the game but FOR YOU you were no longer synced properly to him. It also seems that this syncing error is overrided by emotes which means they have a higher priority in the net code. That is very strange.
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It was definitely an odd experience.