Some stuff I found that i dont know if its a bug or not:
when you get out to the club with violet (the gyn girl) you can find the old man (Henry, your boss who lives near your house) in the bar with a girl, on the right stall where you will sit with violet. Talk to him before you sit on your stall. he will say you are his servant and so on. anything you answer (yes i am, no im not) he will ask you to leave (or you will leave by yourself) and then he will disappear after you go to violet house (or even if you choose not to go there). But you cant enter that stall anymore, MC will always say (in front of one empty stall) that "its better not disturb him anymore". I dont know if this scene asffects the relationship between lisa and henry in future.
when you first arrive at ulxerath, go to the big city (ngosomething, i dont recall its name) and it will ask you to stop a fugitive slave-princess (or not). dont stop her, then you go to the pub, and you will see two slaves on bunny dresses serving the tables. they always follow the same path. on the stalls for punished slaves, you will see nobody there. after you talk to the demon on magic shop, she will ask you to find the essences, then you will find one slave girl there who tells you to find the south tower. if you go back to pub now, you will see no slave waitress, but they still has they speech, if you "talk" to the 'botles" on the balcony (two botles will give you the speeches, one in the left, other on the right).
I dont know if those are bugs.