1. Craft a new book. It's a book called "Book".
2. Enchant it. It's an enchanted book called "Enchanted Book".
3. Grindstone it. It's an UNenchanted book called "Enchanted Book".
See attachments for a visual explanation.
Seems to be caused by the fix for MC-148529.
Linked issues
is duplicated by 6
MC-151604
Grindstone naming Enchanted Books
Resolved
MC-151852
Enchanted Books keep the name "Enchanted Book" when disenchanting them on the grindstone
Resolved
MC-151984
Enchanted Books disenchanted by Grindstone have the name "Enchanted Book"
Resolved
MC-152283
Grindstone deenchantment titling issue.
Resolved
MC-152651
Using the grindstone on enchanted books
Resolved
Attachments
Comments 2
The "Enchanted Book"s seem to act normally in every way I've tested except that they don't stack with normal books.
They can be enchanted, used for crafting bookcases, enchanting tables and book and quills and they stack with each other.
Can confirm.