It can do either. Small screens close it as there usually isn't enough space for it. Large screens do have the space so it minimizes rather than closes, and it'

It can do either. Small screens close it as there usually isn't enough space for it. Large screens do have the space so it minimizes rather than closes, and it's especially imperative that it does so, because if it closes on a larger screen, it's unintuitive to swipe from the side of the screen like it is on mobile.