Under rating threshold (hideshow)
Also if you only give one measurement "NaN", it will do the same thing, but if a circle touches it it will get stuck in the top left corner. (Only tested this with a square)
Under rating threshold (hideshow)
In the level builders, if you type a letter for w/h, it will make the hight/width "NaN", and when you place it, it will have no collision and will freeze in place wherever you placed it.