Minecraft Version

1.21

Mod Loader

Fabric

Mod Loader Version

0.15.11

Mod Version

4.0.0.4

Modpack or other Mod

The bug is related to Wooden Bucket.

Describe the Issue

It's pretty easy to replicate. You just need to take water out of a cauldron. The bucket will disappear.

Logs

https://pastebin.com/j4v3hHYH

Do you use any performance-enhancing mods (e.g. OptiFine)?

No response

Thanks for your report :) I will look into that :)

Fixed in upcoming release 1.21-4.0.0.5
Thanks again for your report! :)