I am receiving a guaranteed duplicate combination between Xur and Eva. If I get enough candy, go to Eva and exchange it for an exotic class item, I am guaranteed the next combo roll from Xur is going to be exactly the same. It happens in reverse as well, if I get it from Xur first, Eva will give me the exact same roll. Is this an expected behaviour, a bug or is my RNG that bad? It has now happened 5 times (I was testing it). I even changed the attunement during this with the duplicating combo still occurring. Perhaps I missed a memo somewhere.