Another bug found: I can advance Danielle's score to 40, but when I meet her in the park and advance it the final 5 points to 45, save game, load that save, her score is back to 40.
EDIT: Another bug: I can't advance Janice's "gentle" score past 19, through cheat menu or just through grinding. I get the "gentle/rough" scenes, but the score won't go to 20.
Another one (previously mentioned, in part): When visiting Billy's/Rachel's house, the lighting/shading changes from dark to light to dark to light again while outside the house. It's dark for an instant after the location loads, switches to normal daytime, click on the door and it changes to dark for a second again before switching back to light before Rachel answers.
Another one: When meeting Danielle in the park, sometimes another character's score change screen pops up for just an instant before showing her score increase of 5. I can't tell who's screen it is, but I think it might be Kelly. Something similar happened in one visit to the pharmacy, where a score increase of 10 appeared for an instant before it showed the correct increase of 5.
And of course, there's the bug with save slot #5. You can save to it, but it shows the slot empty when you try to load. It still shows the right day number of your attempted save every time you save again (to another slot), but slot 5 is empty when you try to load a game.
I'm sure there are others, but these are the bugs I've noticed so far in 0.19 Beta 2.