Minecraft version
1.18.2

Mod version
2.2.1

Describe the bug
when I move a few blocks away the wither disappears, I'm using the Dawncraft modpack without any other modification than the wither storm mod, I tried changing the rendering distance but it doesn't work, it doesn't have oprifine, it uses rubidium and oculus

To Reproduce
Steps to reproduce the behavior:

1. instal dawncraft
2. add Cracker's Wither Storm Mod
3. play
4. summon Wither Storm and move a few blocks away

Is OptiFine installed?
no

Screenshots