[Bug]: Some tamed dragons despawn

[Saimiau]

What happened?

In a server with friends, I went out of my village, travelled 1000 blocks and when I returned 1 hour later I found that my dragon disappeared, but my friend's one didn't, Both dragons were staying and the dragon didn't even left its body, so I think it didn't died. The log attached is just the server log.
latest.log

Minecraft Version

1.20.1

Ice and Fire version

2.1.13-1.20.1-beta-4

Citadel version

2.5.4

Relevant log output

No response

Other Information

• I am using other mods besides Ice and Fire
• I have attached a log file from the session that I have experienced this issue