It doesn't matter how long she'd worked there, she wasn't there all the time. Maybe someone moved it to use the draining board to clean something. It might have been nothing to do with washing up. As I said, maybe they put it upright at night to dry it off, and put it flat before JB got there in the morning.
Why on earth would Jeremy move it to an upright position? You keep avoiding that question.
When did you ask me ?
You say 'maybe' & 'if' a lot.
He put it on it's side so it took up less surface area. He can't stand on the sink tidy.
Bamber had no choice but to exit the kitchen window. So he could bang it shut. He had to get onto the sink area during the exiting via the kitchen window.
Not sure what the problem is.