Moving the window to a different monitor

[ethanmdavidson]

I would like the game window to open on a different monitor, so that it doesn't cover the IDE when it starts up. I tried the following code but it doesn't seem to have any effect:

fn main() {
	let mut app = App::new();

	app.add_plugins(DefaultPlugins.set(WindowPlugin {
		primary_window: Some(Window {
			resolution: WindowResolution::new(500., 300.).with_scale_factor_override(1.0),
			title: "hello-world".into(),
			//position: WindowPosition::Centered(MonitorSelection::Index(0)),
			..default()
		}),
		..default()
	}));
	app.add_systems(Startup, move_window_to_other_monitor);

	app.add_plugins(GamePlugin);

	app.run();
}

// This function is for development, so that the game doesn't open over top the IDE. It's not working, not sure why
fn move_window_to_other_monitor(
	monitors: Query<(Entity, &Monitor)>,
	mut window: Query<&mut Window, With<PrimaryWindow>>,
) {
	let mut primary_window = window.single_mut();
	println!("Primary Window on: {:?}", primary_window.position);
	monitors.iter().for_each(|(entity, mon)| {
		println!("Monitor: {:?}", mon.name);
		// my computer has "eDP-1" and "DP-2"
		if mon.name.as_deref().unwrap_or("") == "DP-2" {
			println!(
				"{:?} has been moved to {:?}",
				primary_window.title, mon.name
			);
			primary_window
				.position
				.center(MonitorSelection::Entity(entity));
		}
	})
}

In the console, I do see it print hello-world has moved to DP-2 so I'm very confident that I'm finding the right monitor and changing the position field.

I've also tried setting the monitor during window creation (position: WindowPosition::Centered(MonitorSelection::Index(0)), with various index values) but this also has no effect. I also tried WindowPosition::Centered(MonitorSelection::Primary) but this too has no effect. Regardless of what index I select, the window starts on the monitor that has focus, and stays in the same place. It doesn't even center itself!

I'm a newbie to both rust and bevy so I might be missing something obvious here.