GUICanvas Bounds wrong

Trying to set up a split screen, i noticed the bounds of GUICanvas seemed wrong. This is the GUICanvas.OnRegister() implementation:

public override bool OnRegister()
{
_bounds.Width = GFX.GFXDevice.Instance.CurrentVideoMode.BackbufferHeight;
_bounds.Height = GFX.GFXDevice.Instance.CurrentVideoMode.BackbufferWidth;
return base.OnRegister();
}

i've changed my version to use the graphicsDevice's width for width and height for height. I assume this is not the intended funtionality.