Exponential duplication of entities with multiple hitboxes by gateways.

[Dryym]

Describe the bug
It appears that gateways can exponentially duplicate entities which have multiple hitboxes. In vanilla, The only entity with these properties is the dragon, However other mods may have multiple hitboxes on their mobs. Most notably, Fossils and Archaeology dinosaurs. It seems that if one of these extra hitboxes enters a gateway, It attempts to teleport the entity. But since only the extra hitbox is in contact with the gate, It instead creates a duplicate of the mob on the other end of the gateway. It likely repeats this process every tick. And then it also likely repeats this process on the other end of the gate, Sending more clones of the initial dinosaur back to the start. Ad infinitum until the game inevitably crashes.