Also please note that ... a bathroom is not a bathroom unless there is a sink in there. If this were a stand-alone shower room, even the current NEC rule would not apply.
I would suspect that there is a sink there. I see in the bottom of the picture what appears to be either a soap dish or a toothbrush holder.
I would write it up as a safety issue. Having a fuse panel that close to the shower can't be good. Not to mention, they may not be able to get homeowners insurance due to the presence of fuses and, that most likely, the shower/bathroom wasn't permitted.