In case your guild frequents the town of Halaa on World of Warcraft's Nagrand island, you may want to take heed of this possible bug that's just been reported.

Hypnos over at the WoW official forums has recently brought to everybody's attention that the new superior resilience gem recipe that was supposed to be introduced come patch 2.1.2 is still missing from the town's NPCs, who are accessible after a faction captures this neutral town.

And while other players were suggesting that the new gem recipe was a rare drop for non-controlling factions  from the town's 15 NPC guards, Blizzard spokesman Hortus eventually dropped in on the thread to explain the recipe's alleged disappearance:

We checked out the new Resilience gem, it is in game, but the spawn conditions seem to be making it very unlikely to spawn on the vendor. This is going to be changed in a future patch to assure that it spawns often enough for people to get in a reasonable amount of time.