Hello
I was running the mechanar dungeon for gold and xmog (in cata prepatch) and after killing the mini bosses and the big boss, and all the trash on the first floor before the elevator, the cache of the legion wont unlock. It appears that since keys were removed, you cannot unlock the cache and wowhead also says after killingGyro the cache should unlock, but it doesnt.
Is there something im missing or is this a bug? I also tried in both normal mode and heroic mode and it doesnt unlock.