are you sure bed is where you are meant to be? maybe check other locations in the house for possible late night scenes?I've just restarted the game and overwrite the save since it was bugged. I don't have anything else, pretty sure i did like almost no tasks and the bed just showed "leave" when clicked and the time was midnight. Porting this game to unity it's a pretty big mistake. Devs needs to understand that if you're not making something more complex than a visual novel you need to use renpy, playing this kind of game made in unity are so annoying, like long waits after the mc says something, things not working like it should, etc.
(Though to be honest it does sound like you're bugged)