This bug was discovered while making the translation
A very serious bug of copying items

First, put 64 iron ingots into it

Then, destroy it

It drops these items

Uh...I'm still having this problem after testing with development, is it not uploaded yet?

what do you mean when you say you're testing with development? Where have you downloaded the mod from?

Machine translation may be wrong, I build from 1.18.x-dev branch

this requires latest version of core though

Well thank you very much!

Fixed in the latest core which is released on CF