Severe Desync from server when UDP is enabled #850

Description

For some reason sublevels are desynced severely for one of users of my modpack server. I disabled "attempt_udp_networking = false" and it is no longer desynced.

Game Log

Unfortunately there was nothing of note worthy there. There was nothing printed from aeronautics or sable except occasional "received movement packet from non existent sublevel" which users that did not have desync issue also see.