This happened to me in v1.5, so in this version, what i did was finish Rachel's quest before meeting her in the bathroom, which i didn't do last time (and when i mean finish, i mean ALL of it). It worked and i got the scene, so maybe try that? Maybe it will work with your game too.
On another note guys, i had this problem with the pussyfight questline, where once i talked to Nina about joinning them, and when she took me to the ring to fight Svetlana (AKA the very same moment the talking scene ended), the screen went all black, and it didn't change at all. I don't know if it's a bug or just me being an idiot for messing with the fighting training with rpgmaker, changing the switchs for the training sessions to true and putting the stats of fighting at max (basically, what the 1.4/5 walkthrough told me), either by doing it wrong...or doing it at all on this new version.
I am replying it again, and this time i'm going to do the trainings full time, no cheating, and see if that works. If not, i will come back and warn you guys of this bug. If, by any chances, somebody has any kind of information on why did this happen, i would welcome it happily.