Whenever I use a Tinkers' Construct tool with Unbreakable and Crooked it will use durability when used.
Looking through the other issues I found the same had been reported but for the Smashing modifier. It looks like only that was fixed. Please help.

As you can see in the picture it is broken and has Reinforced X (Unbreaking).

This was fixed alongside the hammering change. Can you please confirm your Ex Astris version as I am unable to reproduce this.

Ex-Astris-MC1.7.10-1.16-18
It seems to only be unbreakable on wood but on items that can be 'crooked' (leaves) it will lose durability.

Hello?

I am 100% unable to reproduce this. I am using an unbreakable tool with crooked on it on leaves, and it's taking no durability damage.

That's odd.

Edit: A simple tinkers' update fixed it.