The Cayde Timeline Reflections quest won't check off even though I've completed it four times on two characters. This is a known bug and Bungie said they were completing it for everyone, that isn't currently the case. I've looked in the forums and its been broken for five months. Please mark this as completed on my account so I can play the game. I don't care about potential future fixes given that it's FIVE months old. Just check it off.