The Unbreaking III enchantment works as if it was Unbreaking I.
When using a fully enchanted diamond Pick, Unbreaking III will take 1 - 2 uses to go down in durability. Unlike the 2 - 3 uses it supposed to be.
Reproduce:
Enchant a diamond pickaxe with Unbreaking III and mine the appropriate blocks. You will get the bugged result.
Cleaning up old tickets: This ticket has not been updated recently (~1 year+) so is being closed as Cannot Reproduce. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines.
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