I pulled the Exotic Cipher out of my season pass today and quickly travelled to Xur to pick up some high stat rolled exotics. It was to my surprise that I couldn't use the cipher to purchase any of what he had for sale, just the normal legendary shards. Thinking this was most likely a bug I shutdown the game and restarted it. No successful change in the situation, so I went to Rahool to see if the cipher would work with him. It would, unsatisfyingly, given that I already own ALL of the seasonal exotic weapons that the cipher can be used to purchase. Please look into this as just having a consumable just sitting in my inventory is highly annoying.