^^^ they do that on purpose
And for my first world problem...line between the toilet and the wall in the upstairs bathroom busted and flooded the kitchen below. Have to take off work to meet the insurance adjuster.
Welcome to my world, Tex! Be prepared to be screwed by the adjusters, who will reimburse you by the square inch for drywall, etc...
Granted, mine was flooded thanks to a 5 year old. My neighbor has now had his house flood TWICE from the toilet, once from the line itself, once from the plastic fitting that goes to the tank. His wiped out the entire downstairs.