The only reason this is like this is because the contractor didn't want to drill through the tile to put the toilet paper dispenser on that side. They either didn't hire a good contractor, or they hired a good contractor and didn't pay him well enough. That's how this type of thing happens. The contractor just makes a note never to use that bathroom unless they bring one of those extending hands you use to pick up trash.
What's awkward is that if anyone else is in the restroom they'll see you making frequent trips to the toilet dispenser. Hopefully you don't have a messy one if you know what I mean. Actually, it sounds pretty clearly described as "a messy one." I don't think anyone will have a hard time figuring it out. They might have a hard time getting out of their heads though.