Unknownreported this bug
Summary
So i found this bug when you use /mm import and then use this item as a drop. This item can only be dropped 1 every kill. I tried making the mob drop more than one but that didn't work and still was only dropping one
Steps to reproduce
Import an item, use it as a drop and try to drop more than one.
Current behavior
Not dropping the correctly amount of items
Intended correct behavior
Dropping the correct amount of items
Proposed fixes
I think this is caused because you are retrieving the item stack and setting it to one. I don't really know