On a server, Removing items from coasters is not synced between clients. Placing items works as intended but when a player removes an item from a coaster other players don't see any change. Other players are able to place items to replace ghost items.

Mod version 3.1.2, Neoforge 1.20.1 (47.1.106)

I think I've gotten it fixed, the issue was that I forgot to clear the inventory before loading it.