I've played a couple of versions, and I think I came across a bug I never noticed before, so I assume it was introduced recently-ish. Before Yuriko "takes over" the plaza and starts hanging there every evening, if you go to the plaza on that time of day - evening - the game acts as if you were clicking on the Bio AI lab instead. From what I could tell this doesn't happen at any other time of day, doesn't impede triggering events, and is fixed once Yuriko starts hanging out on the plaza, but still caught my attention.
On the topic of bugs, this has more to do with pathing/choices and consequences, but it has been the case for some time that even if I refuse to let Katsue enter the shower, MC still has the dialogue saying her idea to relieve stress was great when doing the repeatable "talk" with her. I bring this up because if you reject Effie on the pool, when repeating the "talk" with her she correctly references the fact that you turned her down (same as Aresianna after the beach event). I did spank Katsue when she burnt the food, in case a variable there has something to do with it, but I've otherwise done nothing lewd with her. EDIT: Also, on the Vess event Katsue says "you claimed me just the other night", even if I did not have sex with her, so now I'm pretty sure there must be a misplaced variable somewhere.
This is more of a suggestion, but... now that there's a choice to change your stance on being FAI/SAI later - great decision on your part, by the way - imo the warning given when making the first choice should be removed. Right now it still gives new players the impression that they are making a super important choice early on, so if the text that said the choice is super important was changed to something like "while your stance on AI is extremely important, you will get a chance to change it in the future", imo it'd help new players be more at ease.
Haven't exhausted the update yet, so I'll keep playing - props on the great game so far, you made a lot of endearing and sexy characters!