The book "Awakening if the Heart" is missing from the Mordant Crescent Great Hall. This is preventing the completion of the Library Detective achievement. This area is not accessible except during the Living World Season 4 "Daybreak" instance. I have 6 out of the 7, but can't complete it because of the missing object. I replayed the story with same result. Sent a bug report (with screen shots), but that won't help complete it.