Masturbation (especially milking) still causes your character to immediately sleep when they do it. But of course, that's been talked about before (I remember in this forum, probably in this thread, it being said by Savin that he was thinking of removing the sleep-on-masturbation). I do think it's ridiculous that your pc does this every time and I especially think this for milking (while Brint can milk you if you're going along with the prompt and "relieving the pressure," Brienne does not seem to have a scene for milking you and as such you're pretty much forced to use the masturbation menu option if you don't have Brint), but it's not too much of a hassle since (outside of the aforementioned milking) there's plenty of ways to get your character to be relieved beyond that menu.
A bigger gripe for me, currently, is that there are several things where a full day passes and sleep is implied or even stated but your character does not sleep. Things like training (all 3 kinds), along with events like Brint/Brienne's holiday present, take a full day to do and have you waking up in the morning, but you both do not gain the class benefits from sleep and do not have dreams. The unfortunate part of that is that also means you don't get to see Kiyoko when you sleep if you've not freed her from the orb already, along with the lack of the class buffs if you don't immediately sleep again (though admittedly they are rather limited). Luckily the masturbation thing does let you have dreams and counts as actual sleep, but I just don't like how many things that involve sleep don't actually have the pc sleep.
Also it's rather annoying how the training seems to take much longer than a day. Like, my character wakes up at 8:06 AM on day 84, begins attribute training at 8:12 (since 6 minutes pass in-menu), and then suddenly it's 6 AM on day 86. What happened to day 85? That's not a day passing, that's just shy of two days.