This issue with the random fuckers not appearing in the brothel is really strange. We not know what could be different on your machine that would cause this to happen. I have a couple of questions that might help us get to the bottom of it.

1. Do you see the girls in the Brothel Rooms?
2. Have you done anything in the console to change how the game is working?
3. Can you post a console log from a time this happened while you were playing?

Thanks