Bungie I believe the Perdition legendary lost sector is acting buggy. On about my 3rd run I get Phoenix Protocol. I have 3 of those. So I keep running it again trying for the Mantle of Battle Harmony on my Warlock. After numerous runs I ended up with 3 exotic engrams from the end chest. When I went to the post master to collect them I was greeted with a Necrotic Grip and an Ophedian Aspect. Arms when the rewards state chest? The 3rd exotic engram only gave me an enhancement core. An enhancement core for an exotic engram? Seems like the propensity to drop non listed rewards is much higher than the rate for listed reward.