The bug
You can stack two enchanted books together if they have the same curse enchantment on them, by putting them into the two slots of a grindstone.
To reproduce
Put down a grindstone
Get two enchanted books with the same curse enchantment
Put those two books into the left slots of the grindstone
→ ❌ You'll be able to pick up a stack of two enchanted books from the right slot of the grindstone
Original description
i was disenchanting using a grindstone, and when i put 2 curse of vanishing books together, i expected it to just put an x and i wouldnt be able to do it. What actually happened was that the two books stacked. You can reproduce this bug by putting two books of vanishing in a grindstone together, then shift-clicking the outcome.
Linked issues
is duplicated by 7
MC-158738
Able to have 2 Curse of binding books
Resolved
MC-165335
Curse of vanishing/binding book can be stacked with the Grindstone
Resolved
MC-199955
Stackable enchanted books
Resolved
MC-202331
Grindstone can make 2 books in one slot
Resolved
MC-202894
stackable enchant books, and duping enchants
Resolved
relates to 2
Attachments
Comments 11
Confirm in 20w49a, 20w51a.
That where the same duplicating item as "Unbreakable" Tag enchanted sword.
Can confirm this. Not a duplicate of MC-140397 as you can always reproduce this and that issue with swords isn't an issue anymore.