Put the summary of the bug you're having here
I get my enchant and it works like a boss:
I get unbreaking 3.:
I get the enchant and it has no effect on anything that I put it on, if you punch me it counts as one armor use, rather than 1/3 use
Steps to Reproduce:
1. enchant something with unbreaking
2. .have someone hit you, shoot you, blow you up...
3. .it uses one use and the enchant use practically useless
Keep in mind that there's no such thing as 1/3 of a durability point. Unbreaking makes it so that there's a chance that you won't lose a durability point.