There appears to be water damage outside the shower near the floor. I'm not sure what is causing it. I could use some advise as to exactly what kind of research and/or repair is needed for next steps. Is this a drywall issue? Could sanding it down and repainting it be enough? Anything I can do to stop the damage?
There is a little plastic runner that goes on the bottom of the shower. I've replaced it before. It has never worked well even new.