Is there a bug in the simulator of the Game Closure browser, so device.width and device.height are incorrect

Question

I use the Game Closure browser simulator, which states that this is a 600x800 sized window.

I print the size of the device when the application starts:

console.log(device.width);
console.log(device.height);

It displays this as 320 x 480 (this is width x height):

320
480

The journal also says the following:

LOG platforms.browser.doc resize 320 480

The same thing happens when I use the facebook simulator.

The problem is that I am trying to use device.width and device.height to scale my game to full screen size, regardless of the system.

If this is a known bug, is there a known job?

Thanks!