Bumping this thread in hopes EA see this and fix this bug. I refuse to miss any content on my first playthrough and I'm almost done with all the side quests currently available to me that are keeping me occupied in the meantime. A previous save is not possible for me either since I save so frequently, I'm long past the point of no return. Removing and reinstalling the whole game doesnt work at all.
Summary: Cullen completely dissapeared from Skyhold and in his place, and Inquisition agent who is uninteractable. Leaving the area and map does not bring Cullen back. Cullen not available near Cassandra either.
Steps to Reproduce: When Cullen is gone from his usual post to talk to Cassandra, start and complete Sera's "Prank" quest.
Results: Cullen completely dissapeared from Skyhold. 100% success rate.
Platform: PlayStation 4
Version: Dragon Age: Inquisition, Patch 2 (December 9th 2014)