I live in a corner, bottom floor condo unit. I recently used my hall bathtub and, for the first time, I filled the tub up past the overflow drain. While in the tub I heard a pop that sounded like an electrical short which had never happened before. After I drained the tub, I went into the laundry room which is adjacent to the bathroom and there was water on the floor. It was coming into the laundry room underneath the baseboards. The tub is directly on the other side of the wall. There was maybe two gallons of water that I cleaned up. There was no damage to the wallboard at all. It never even appeared to get wet.
Can someone tell me what might be wrong with the overflow drain? You can tell that someone has already worked on the drain because the metal cover isn't on straight and the bottom part of the overflow drain hole is exposed. It appears that they attempted to fill in the exposed gap with something like plumber's putty.