It happens. They put brace comb all over, depends on the depth of your floor, if there's a big space between floor and bottom of bars, then they put lots more comb there. Because most folk use worker foundation it tends to be drone comb.
It also appears more if they are lacking space in the box and then they really do use all the extra space.
It's a non issue. Just leave it unless it's getting in The way.
Let me never fall into the vulgar mistake of dreaming that I am persecuted whenever I am contradicted - Ralph Waldo Emerson