I just completed the guest to unlock Thunderlord and was given an Exotic engram (hence how you get Thunderlord) went over to Master Rahool and had it decrypted and got Thunderlord. No big deal. However I have the Relics of the Golden Age Pursuit active and did not get credit for decrypting the exotic engram that I used to get Thunderlord. If this is bugged please fix and credit me that's the first exotic engram I have gotten and it took forever for me to get.