Hi! Thank you so much for playing our game on stream, I'm super excited to watch the VOD!
For your observations, yes, the settings menu in-game is broken! the main menu one works, but yknow, that's just not viable lol. Yes, the dialogue system doesn't lock the player properly either, we plan to likely update this project and refine it there. The composure meter loss you were experiencing was the hidden "combo" mechanic where the more you serve "correct" drinks, Saigon loses more and more composure, and she needs to serve bad drinks! It's not well communicated in game though, so we definitely want to improve the user experience.
Again, thank you for playing our game!