I'll never forget the time I was asked by a stranger to stand in front of the public bathroom stall while his daughter used the toilet. Of course the stall was within legal standards for accessibility, however, the girl could not pull herself up off the chair and onto the toilet seat with the chair on the side of the toilet. She needed to keep the chair in front of the toilet, which prevented her from being able to close the bathroom stall. She was crying, so embarrassed.

I don't know if the laws have changed for larger dimensions of bathroom stalls. A person using a wheelchair should be able to approach a toilet from the front or both sides. Rails should accommodate that or have rings hanging from the ceiling.