After getting the mystery scroll from the bandits, I put it in the dragon skull, like the quest suggested. After speaking with Wael, the spooky blur filter persists on screen. It feels like I've got alergies or something. Anybody know how to turn this off? Here are some screenshots demonstrating. I can replicate this bug, and it lasts even after I've restarted my computer and loaded up the save file again.
http://i.imgur.com/Xub6mM3.jpg
http://i.imgur.com/VvkdS43.jpg