Solved Sharptooth Airkspike can be crafted only once?

I bought the recipe for the sharptooth airspike mount ( http://aiondatabase.net/us/item/152220314/ ) and after a long time i managed to get the materials to craft it. About a week later i checked the designs i had and i didn't have it in ther designs i know and when i checked the NPC that sold the scroll, it wasn't read,which means i can learn it again. Can you only craft 1 sharptooth per recipe or is this a bug?

 

I searched a bit and found this:



(source)

I also found this video.. It looks like the recipe does disappear after you craft it, saying "The recipe is exhausted from Crafting Craft: Sharptooth Airspike" and you have to buy the design again:



So yeah, no bug ^_^

 

dont you get the life leaf from a boss? like a tree thingy

 

Yes you have to buy the recipe each time you are going to craft a new one

 

thanks guys,didn't notice the message. Anyway 20m is a little price to be paid for a good mount