Guild Wars 2

Greetings forum-ers and mods alike, I wrote this as a complaint at first but I was told to post this as an apparent ‘Suggestion’ here.
Recently I wanted to experiment with sinister gear and i was lacking one recipe for an amulet. So then I decided to simply go ahead and purchase this recipe from the Trading Post and i noticed http://imgur.com/u92WSZ2 .
There were like 4 of these and I did not notice a difference in price so i tried buying one and my character learned the recipe but cannot craft the item. so then i ended up buying all four of those and noticed only one of them worked.
I do not know if this was made intentionally by devs. or something like that but if it wasn’t, then this has to be corrected as it will confuse others and people are just going to charge you a lot for a recipe that might not work.
Btw i was told to post this here by GM Hawk.

That’s because one actually is mis-labeled and makes the Black Diamond or other new recipes found in Heart of Thorns.

There have been many reports on the forum, and elsewhere about the wrong label; I’m sure they will change the tool-tip soon.

Well if thats the case i seriously hope they do. Btw i have searched the internet for this bug while i experienced this but i didn’t find anything except for one other post.