REG: Compiled QML yields wrong result for undefined == null

import QtQuick
import QtQuick.Window

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

    property var test: null
    property bool isOk: test == undefined
    property bool isOk2: null == undefined

    Component.onCompleted: {
        console.debug("isOK: " + isOk + ", isOk2: " + isOk2)
    }
}

qml: isOK: true, isOk2: true

qml: isOK: false, isOk2: true