Melee map folders regenerate in the Downloads folders

Why are there a bunch of random melee map folders in my Downloads folder? I even deleted them all the other day and, the next time I ran the launcher, they came back into my Downloads folder.

Again, minor nuisance, but, A) they shouldn’t be automatically populated into a folder meant for custom maps, and, B) it’s annoying to have to scroll past a bunch of melee maps in my custom map folder just to get to the custom maps.