Quote Originally Posted by Legion88 View Post
It is no bug.
While it is right that it would not cost the CP but you still need at least the amount of CP to activate it and this criteria is not set to 0.
So, the description is just poorly worded then.
Reduces Flawless Synthesis CP cost and durability loss to 0. Effect duration determined by recipe difficulty.
Should actually say something like:
The Cost and Durability for Flawless Synthesis will be refunded.
This brings me to another related question then, if you had only 10 durability available and pressed Flawless Synthesis under Maker's Mark, would your synthesis break? Just like the behaviour of Manipulation.