Yes.I've tried what you said, but I can't reproduce it.
The only thing that comes to mind is, you have broken the bathroom door with the screwdriver, thereby preventing you from entering it.
Did you use the screwdriver on the bathroom door yet, because after using it, you can enter the bathroom at anytime, and the bathroom should only be in use, is 8:00-10:00 and 20:00-22:00, which would make me assume you yet to use the screwdriver on the bathroom door.
because if John's still around and you haven't made the choice to kick him out or let him stay, he should be watching tv at the time of when someone might be in the bathroom. and Janice doesn't read a book between 08:00-12:00/13:00 and 20:00-22:00
I've done the hidden camera task, so I've broken the bathroom door.
Let me try in later quest to see if I can reproduce it.