A friend and I went through the entire quest and made it to the final chamber with the book inside. We both read the book and he got the commendation and the quest completed for him, but the quest is bugged saying I need to unlock the final chamber and find the secrets. I have relogged twice and it still isn't completing the quest or the commendation for me at all. Any suggestions, beyond redoing the quest entirely?
Edit: I realize that relogging after the quest completed would prevent completion by going back into the chamber, but when we ran it a second time, we had the same result where I interacted and nothing happened, and he interacted and it completed the quest,
