Unfortunately I had the same issue. Hope this will get fixed.There is still a bug, if you go to sleep(the option to basically skip the day) while being at the outside the school it won't take you to bed and if you choose a location in the map its just gonna get a black screen and you are lose your progress if you didn't save.
search for "save 0.19" at the top of the page and check "Search this thread only"any save game file please
From my experience he is normally not at home from 2 to 5 pm.is there an exact time when billy isnt home?
I usually go there directly after school and he is never home.yeah i noticed he isnt home around 14 pm