Bug: EXP Orb and Bottle NPCs move around

### In which plugin has the error occurred?

FancyNpcs

### What happened?

An NPC with the type experience orb will follow the player like a normal xp orb.
An NPC with the type experience bottle will slowly sink into the ground.
reloading both will spawn them back at their original spot.

Arrow will fall to the ground, hitting a Block stops it even if the block is removed.
You are able to hit a Windcharge, sending it in the hits direction.
Minecart and its variants look really weird if they turn to player.
Egg jitters in air up and down.
Enderpearl also jitters.
Evoker Fangs is non existant?
falling block also doesnt exist?
Fireball can be punched, but instantly teleports back.
Firework rocket jitters up and down.
Fishing bobber doesnt exist?
Item doesnt exist? (maybe because the item has to be set and i dont know that?)
Item display has no display name.
Lightning Bolt appers once. (This could actually be used to spawn lightning when entering somewhere)
Llama spit jitters and turns.
Marker is invisible.
snowball jitters.
splash potions also jitter
TNT jitters and vanishes on explotion.
Trident jitters.
Wither skull looking at player is inverted.

*edit with new NPC types

### In which software has the error occurred?

Paper

### Plugin version

2.6.0.278

### Server version

1.21.6

### Relevant log output

```shell

```