I have a few issues with the game off the top of my head:
1. Many of the choices have hidden stat changes, for example accepting to be a part of the debate club lowers your dominance by 1, but this isn't shown on the choice prior.
2. Some of the stats have some frankly ridiculous requirements to meet. For example, the sleepover at Jasmin's house requires either 50 openness or 30 sub, which you can't achieve unless you exclusively focus on submissiveness, and even then only comes right when the class content dries up, or again for openness. The most egregious example would be the final Yara friendship event, which requires 20 (TWENTY) looks to become selectable. Even lowering it to 10 would mean, again, maxing out athleticism, clothing gains, etc. These aren't so bad because they can be delayed indefinitely, but for others, like the final option in the valentines stranger event, are seemingly impossible to get without cheating. Also, speaking of athleticism:
3. Some options will have changes shown, but won't actually apply. For example, exercising with Leo doesn't grant any athleticism unless you pick the random workout option, which is annoying.
4. The phone message system is extremely buggy currently. For most interactions with it, you need to go through it twice at the very least, because it won't register. Some are just completely broken, for example with the Eva clothes shopping at SM event, the Yara sub event is bugged.
5. Some options don't even work at all. The worst of these would be the events involving jerome/jasmine, for example during the date night, there's an option to use Jerome to hit on Eva, but the event doesn't work, it will bug out.
6. Manually triggering character events in each NPC screen is never explained to the player.
7. Many of the images are broken currently, or just aren't used period. The most annoying of these would be the Eva/Leo images which suggest an interaction with them beyond the song practice, but it turns out that they're not even used.
8. Eva's bimbofication is completely broken. The bimbo character events don't even update in her screen, likely due to using an increasing number to represent her progress, when the progress on he character screen instead decreases. I'd either update her screen to show an increasing amount of bimbofication, or a reducing level of smartness. Additionally, unless I've missed something, it seems impossible to max her bimbofication (or rather reduce her smartness to a minimum) for the final event.
9. There's no way to track how well you're doing on a particular project until the very end. It required testing on my behalf over the multiweek events (tedious) to figure out how to get each outcome for the arts events on both sides (4 in total).
I could go on, but I think that summarizes the biggest issues I've found. Oh wait, I thought of another:
10. Some events will change depending on your stats, which is never explained. The worst example of this would be the Yara/Eva costume making event, where selecting "Suggest Yara wears it" will change depending on your dominance. Get rid of this system and replace it with separate options that enable/disable based on the stats.
11. And I found yet another annoying bug. If you do final Jasmin's friendship event, you permanently lose any clothes you're wearing.