I just bought this game the past weekend and started my game with patch 1.04 installed however, I have just got to this chapter and am having the same issue. After talking with dresciu and following him to the back door to watch his interaction with dorothy, the game bugged out and now he is standing at the door doing nothing. After this happened I was unable to speak to anyone. After restarting the game i can again speak to characters but dresciu is still standing by the door and the quest will not advance. I am playing on ps4.