Here are the bugs I have found so far:
Ok, did the Jet quest, no real bugs in that one though I don't know if you're not supposed to be able to talk to her again once its done. Her interactive scene is good, and her scenes at the end of her event are pretty neat too.
As for Caroline and Nadine, neither of them seem to have triggering events for sex or anal. Caroline is a virgin, but she doesn't have a first time with her scene like Rachel and Ms Taylor do. Nadine doesn't have something for her anal scene either, she says "fuck me again in the ass" which doesn't make sense for the first time you pound her. I don't know if these scenes are in the game, and not working, or if they will be added later. Nadine's blowjob animated scene is also bugged as it stobes between it, and a titjob.
As for Sarah, I can't talk with her at all. I think it's a bug that I now noticed I had in 0.9 where after I chose her, she still won't talk to me at all in the house, but I can sleep in the same bed, and give her toys and the like. For the next card, I talk to Richard and have the option of either buying the card or sneaking into my Aunt's house. I can't sneak into her house at all, or do anything with it, and if I buy the card and try to give it to Sarah nothing happens. I'm going to try with another save if I can.
Edit: Tried with the new save. Sarah still won't talk outside of "..." so I'm guessing that's just how it is for now. Has anyone gotten the Sarah quest to work?