The bug
If you put two identical enchanted books in a grindstone, it only outputs one book. It should be two. Is this intended?
Linked issues
is duplicated by 2
Attachments
Comments 9
Oddly enough, if the books have curse enchantments, you get two enchanted books in a stack, see MC-157133
From what I've found the code sets the quantity of the resulting stack to 2 immediately after deleting enchantments when disenchanting two books. But if there are no curse enchantments, it replaces this stack with a single normal book, without setting the quantity again.
It appears at least the correct amount of XP is given.
However, if removing the enchantment from two books is intended (and should give two books), then why is this only possible for books with the same enchantments?