Is it a mod compatibility issue?

Yes

If it's a mod compatibility issue, please provide the link(s) to the incompatible mod(s)

https://github.com/samolego/FabricTailor/tree/master

Minecraft version

1.20.1

Describe the issue

https://discord.com/channels/662271867431682058/671895714527182920/1176069031988576277

has a weird problem where it teleports the player to world spawn in singleplayer, and then kicks in multiplayer every time skin is changed