Alchemy's Transmutation Mastery thoughts and feedback...(not a bug report)

My friend has Alchemy with Transmutation Master skill hes transmuting me gems and stuff for Jwc and hes saying that transmutation doesn't drop him any bonus from it we made around 500 transmutations overall for the past week and none of it dropped some bonus like it should.So i am making this post just to get some feedback if the other players also exp this thing with transmutation mastery...

If its really bugged please vote on bug tracker
https://www.warmane.com/bugtracker/report/12313
And hope it will get fixed some day :D