Fiery weapon enchant .. does it drop or bugged ?

I have been killing this guy for about 2 days now looking for the fiery weapon recipe but it has not dropped.. if you check my logs i think i have killed him about 40-50 times.

does the loot table for him work properly to get the fiery enchant recipe ? or am i just that unlucky :)

Pyromancer Loregrain : https://wotlk.evowow.com/?npc=9024#drops

https://www.warmane.com/bugtracker/report/54245

Not sure if it applies to WotLK, but generally you're better off buying it from the AH.

So far it has not shown up .. :P been looking for a few weeks every other day ..