I really hope that the crafting ability, perfection is an oversight, and not working as intended. Prior to the patch, perfection was, well, simply perfection, in that you were guaranteed on the ensuing attempt success and 0 durability loss.
Post patch, success is guaranteed, but durability loss occurs. This is a major nerfing of the ability, and it's discouraging, since few of the synthesis abilities are worth a damn to begin with.
I'd be interested to hear from the development team if this is, in fact, the way they intended this ability to perform. If so, ; ;, and change the name to something else, please.