Since the last update, characters who are spawned mid-air don’t have their position replicated while falling to the server/other clients until user input or any other force is applied to the humanoid.
Server View
Client View
Reproduction
Create an empty baseplate with a SpawnLocation that’s raised and has CanCollide disabled.
I’ve been having a similar issue–not sure when it started, but I first noticed yesterday evening:
The server doesn’t seem to register changes in the character’s position for a few seconds after they spawn. Additionally, after these few seconds, there needs to be some input in order for the server to update (as mentioned in the post above).
Client (left) vs. Server (right) view
This seems to happen in any Studio file or live game.