I did some runs on duriel and got a double unique drop where one was an ebonpiercer which cant normally drop from duriel. Not only that, the item bugs out the chat and posts a long link for a diablo item code. Anyone experienced the same? (Feels like i got scammed of an uber unique 
).
I thought you could get any Unique from the bosses, just their loot table is what mostly drops or could drop with regards to Uber’s?
Maybe, but the thing is the item is bugged. When i “show” the item in chat it puts out a massive item code that covers the entire chat. My theory is that it was supposed to be an uber, but somehow got turned into a bugged ebonpiercer for some reason.
Could we have a screenshot? Not that I’m doubting you, but that would be a first to see for sheer curiosity.
And also, any rare dropped by Uber can be potentially a unique, so it could have been that the rare was an additional unique not originally in the Unique loot table due to very low probability…
I had the exact same problem but from Andariel. Got an Ebonpiercer in a double unique drop. I havent tried posting it in chat to see if its got the long link thing yet, will check when i get home.