Quick fix I did to visit Claire in the evening.
1: in map.rpy, I changed "Claire" if tod <= 2: to "Claire" if tod <= 3:
2: I deleted map.rpyc (I don't know if you need to do this to force it to recompile, but I assume so.)
It worked after I closed the game and opened my save.
This will allow you to visit Claire in the evening. It includes the typical scenes you can do in the morning and afternoon, but it also includes the event that allows you to progress the story.
No idea if this will cause any problems with anything else, but until the bug gets fixed it will let you play a bit more.