Hihi!
Yes, this is a known bug on our end that I just can't seem to figure out the reason. It only happens if you save/load during the teasing game of Snow White. If you complete the mini-game in one go, it should go smoothly and the last button should be unlocked! :>
Hello. I wanted to say, that it isn't necessarily that you need to save/load to get this bug. I didn't do it throughout at all, esp in the scene with Snow White, and did the scene in one go, but still cannot progress after filling the bar, last two options locked. A shame, trully, that i cannot continue the game - was enjoying it.