Once my DK somehow got stuck OUTSIDE the walls of the citadel. I could run him back and forth but couln't get him back in play area. Also, when I defeated the skeleton mage and he dropped his "bark", it was too far out of the playing surface for me to pick it up. Had to reload and block the skeleton with my character to keep it from running into the niche. Then I could pick up the "bark". This a bug? Patch needed? something else?