Anvil destroyed by the last use will not return the item in the right slot

On a very damaged anvil, I tried to combine diamond sword having Smite V and Unbreaking III with Sharpness V enchanted book.
The anvil disappeared (destroyed), the sword dropped without the intended changes and the book was lost.

Expected behavior 1: return both items: the sword and the book
Expected behavior 2: apply the enchantment to the sword before the anvil is destroyed