Bug: NPCs Disappear When Moving Away and Returning to Spawn

### In which plugin has the error occurred?

FancyNpcs

### What happened?

Hello,

I’ve encountered a persistent issue where NPCs disappear when a player moves away from them and then returns back. For example, if a player uses the /RTP command to teleport into the survival world and later returns to spawn, some NPCs are missing. Similarly, simply walking to the other side of the spawn causes certain NPCs to vanish.

Currently, the only workaround is to repeatedly use the command /npc fix , which is very inconvenient and impractical as the problem occurs constantly.

This bug is critical and needs to be addressed as soon as possible because most servers running NPC plugins are also using proxies (like Velocity or Bungeecord), which likely exacerbates the problem.

There are no errors or messages from FancyNPCs in the logs or console that would indicate what's going wrong, which makes troubleshooting even more difficult.

Environment:

Server software: Paper 1.21.4

Plugin: FancyNPCs 2.5.0

Proxy: Velocity-CTD: Velocity 3.4.0-SNAPSHOT (git-9e949403)

Please let me know if you need any additional information to help troubleshoot this issue.

Thank you!

### In which software has the error occurred?

Paper

### Plugin version

2.5.0

### Server version

1.21.4

### Relevant log output

```shell

```