Short list of unknown issues off the top of my head (not mentioned by anyone at Bungie or in their list of "known issues") - After completing the Duality dungeon, the fireteam will get stuck infinitely in a teleportation loop staying in the final boss arena and unable to claim loot. The rewards do go to the players postmaster - Linear Fusion rifles appear to do greatly decreased damage against the Sanctified Mind raid boss at random - The Chamber of Starlight lost sector among others on the Dreaming City sometimes wont spawn any enemies, making you orbit and try again - Dreaming City Reverie Dawn armor no longer drops with the Rivens Curse mod, making the mod or any Rivens Curse armor currently impossible to obtain