Window content not resizing on Windows about gfx_graphics HOT 6 CLOSED

extern crate piston_window;
extern crate sdl2_window;

use piston_window::*;
use sdl2_window::Sdl2Window;

fn main() {
    let mut window: PistonWindow<Sdl2Window> =
        WindowSettings::new("Resize bug", [640, 480])
        .exit_on_esc(true)
        .build()
        .unwrap();

    while let Some(e) = window.next() {
        let size = window.size();
        window.draw_2d(&e, |c, g| {
            clear([0.0, 0.0, 0.0, 1.0], g);

            let (w, h) = (size.width as f64, size.height as f64);

            rectangle(
                [0.1, 0.6, 0.3, 1.0],
                [0.0, 0.0, w/2.0, h/2.0],
                c.transform, g
            );

            rectangle(
                [0.1, 0.6, 0.3, 1.0],
                [w/2.0, h/2.0, w/2.0, h/2.0],
                c.transform, g
            );
        });
    }
}