Can't read styleName property from font singleton

//Fonts.qml

import QtQuick
pragma Singleton

Item {
    readonly property font primary: Qt.font({
        family: "DIN Next LT Pro",
        styleName: "Bold Condensed",
        pixelSize: 40
    })
}

// Main.qml
import QtQuick

Window {
    id: window
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Component.onCompleted: {
        console.log(Fonts.primary.family);
        console.log(Fonts.primary.styleName);
    }
} 

Text {
    font: Fonts.primary
}