My high level friend(1) just ran my lowbie friend(2) through Deadmines for blues. I came along and friend(1) reset the instance, friend(3) joined as well. This first and second run went as expected. Friend(2) left the group, friend(1) went on his lowbie, and friend(3) became the leader.
The remaining three of us went back to the instance. Friend(3) reset the the dungeon, and we entered in. We cleared most of the trash up to Gilnid in the smelting room, and besides the lootable chests, we did not recieve a single piece of loot besides currency. No cloth, greys, greens, ore/stones, or boss drops. We left after killing Gilnid, seeing as though there was something going on (prevent gold farming?). Keep in mind the chances of no loot dropping from anything are abysmally small, if not outright impossible with boss loot (less than the lottery). I do not see this as chance.
The only thing I was able to find was nerfs to lasher farming and a few other things, nothing really related to this. Any clarification on this matter potentially? Does not seem blizzlike, and I don't see how farming deadmines is going to yield a problematic amount of gold outside of botting, maybe.
