Dear Bungie, I don't know where to post this, as you have no bug report system in place I can find. On the mission "Chamber of Night", the waypoint system can sometimes lead players through the Hellmouth entrance to the later part of the mission. However, if players do not approach the door by going through the Temple of Croata, even though both paths lead to the SAME EXACT DOOR, the door will not open and the waypoint will remain at the permanently-locked door unless players completely leave the Hellmouth and go against the Hellmouth waypoints to go all the way back to the surface and through the Temple of Croata.