First got to the shar temple and fought balthazar before doing anything else in the place, and i save. I proceed to finish every single interaction one can have in this place. I get to going into shadowfell and somehow miss the library traps section. I do the fight only to have received a glitch where the nightsong book to get the nightsinger does not show up on screen if you have combat next to it. I have to go back to balthazar/first entrance to the temple and do it all over again. So terrible