So - I'm not sure what is causing this but I assume there's meant to be belly growth over time as you feed this adorable noodle, at least that's what I gather from the comments. Sadly, this isn't happening and I'm not sure why. I'm not terribly far in, but I'd expect that a capacity over 200 would end up making some sort of change visually.
I'm running Windows 11, RTX 3060, and an AMD processor, not that I believe it matters here. The same thing did happen for me in the web version though which is why I downloaded it. Same issue both times.
EDIT: Never mind! It just takes time! Alright, I'll admit I've seen so many rapid return games that I thought I was experiencing some sort of visual bug or something, sorry about that!
EDIT2: I'd like to say that I absolutely love this game and would love to see more on this, even if it's just a simple little thing (More in-depth belly kneading option, already love the belly rubbing you can do). If you need someone for sound design or VA related stuff, please don't hesitate to let me know!