Minecraft Version

1.20.1

Mod Version

4.0

Mod Loader

Forge

Mod Loader Version

47.2.5

Describe the bug

While playing on the server, I summoned Storm 26000 blocks away from the spawn point. Everything was fine, but after some time, the server lagged. I decided to restart it. And Wither's gone. (Even Amulet can't find it.)
Server is powered by Aternos.

Steps to Reproduce

1. Make Aternos server with Forge and mod installed.
2. Turn the server on and join.
3. Spawn the Wither Storm.
4. Server gets laggy.
5. Restart the server.
6. Connect to the server again.
7. Wither Storm is despawned / gone.

Crash Reports/Logs

No response

Is OptiFine installed?

• OptiFine is installed

Screenhots

No response

Mod List

FallingTree 1.20.1 4.3.1

WS despawning is one of the bugs already. that might be the problem.

This is a known issue #1462