In the library, one party member triggered combat with the spiders while another was nearing the rune circles before their cutscene triggered. Stopping on a circle while in combat triggers the rune. When combat resolves the party is teleported back to the initial circle for the cutscene and puzzle ("Activate the First/Second/Third/Fourth Rune"), however any runes that were triggered in combat before this cutscene have their objective stuck as incomplete. They still count for the orb, so you can still open the door and progress, but the quest remains incomplete due to this bug.
Explore the Ruined Tower Quest Stuck
6 months ago