Border still drawn on Rectangle elements when border.width == 0

The documentation for the Rectangle component regarding border.width states "A width of 1 creates a thin line. For no line, use a width of 0 or a transparent color."

Loading the following in qmlviewer results in a rectangle with a 1-pixel border:

import QtQuick 1.0

Item {
	width : rect.width * 2
	height : rect.height * 2

	Rectangle {
		id : rect
		width : 100
		height : 100
		x : 10
		y : 10

		border.width : 0
		border.color : "red"
	}
}

The size of the border scales along with the rest of the element if a Scale transformation is applied, unlike a cosmetic QPen.