Steps to reproduce:
1. Download and host this level:.
https://www.jazz2online.com/download...ity-and-hotel/
2. Change game mode to single player.
3. Have someone join and jjmorph as frog.
4. Note that other players will not see him as frog. (pic. related)

This particular level cannot be hosted by a non-plus client. I think either the level or the tileset is too big for that. I think that is related to the bug.

What version is the server running--1.23 or 1.24?
What version is the client running--1.23 or 1.24?
Does the server have any mutators enabled?

Game 1.24 for both.
Plus version 6.6g.
No mutators.

The bug also seems to occur on `Hotel Cif 2004` (available on Puke Nukem Servers), and that map can run on non-plus. So I have no idea what triggers it. But despite being able to be hosted on a non-plus server, the non-plus client is likely to experience either an "out of memory" error or some sprites not loading when joining this level. Pic. related. I suspect that may be the common factor.