What happens when it bugs out? How did you played it? I haven't any bug with the dialogues...
So when a dialogue popped up the game would randomly freeze - I could not see what I did except like interacting with the objects. It would not close the dialogue and the game would not respond at all. Tried all the keys on my keyboard and with controller too to see if it was somehow related to the inputs, but I couldn't pin it down :X