Two times until now I had exact two of the same item dropping. First it was a andy visage and second a rare arch axe. I have screenshots as proof but I need more posts to show them. I think it "can" be somekind of drop bug. When it happened I had the same item kind dropping in 5 minutes or smt.
Cant believe I didnt buy gems when they were cheap...........
I know right....I was broke as a joke and only got in on two of those. I'm glad though to see some normalcy returning. I assume the issue was handled under the table, as it should be, despite all the crying at the official forums about why Blizz was so silent about the issue. Some people don't understand that sometimes silence is best.
Blizzard needs way more communication with their customers, but not about things like this. Bringing attention to it is the best you can do. But do not expect blizzard to talk with the masses about it, because they want stealth.