What about the Jubilant Engram Duplicate Glitch. Many people are reporting that they are only getting a fraction of the duplicate engrams they received and in some cases, those are just popping duplicates as well. Many have speculated that you are only giving the duplicate engrams on the first account that logs in. And that is relevant to the dupes on that specific account. For example, I got 4 engrams on my hunter on login(they luckily popped no dupes) when account wide I counted 9 duplicates and that is only after I noticed I was getting duplicates. Still missing a few drops that I would have if the glitch didn't happen.
We are looking into this now.