scale cannot nested alias twice

Rectangle {
    id: root
    color: "#000000"
    width: 800
    height: 480
    property alias testScale1: testScale.testScale2

    component Test: Item {
        property alias testScale2: test.scale
        Image {
            id: test
            scale: 1
        }
    }

    Test {
        id: testScale
    }
}

Rectangle {
    id: root
    color: "#000000"
    width: 800
    height: 480
    property alias testScale1: testScale.testScale2

    component Test: Item {
        property real testScale2: test.scale
        Image {
            id: test
            scale: 1
        }
    }

    Test {
        id: testScale
    }
}