Problem with accessing revisioned properties from QML

class MyAbstractBaseClass : public QObject
{
    Q_OBJECT
    // "originalProp" was in the initially released version
    Q_PROPERTY(bool originalProp READ originalProp WRITE setOriginalProp NOTIFY originalPropChanged)

    // "newProp" was introduced in version 1.1, and therefore has revision 1
    Q_PROPERTY(bool newProp READ newProp WRITE setNewProp NOTIFY newPropChanged REVISION 1)
    //...

    qmlRegisterUncreatableType<MyAbstractBaseClass>("MyTypes", 1, 0, "MyAbstractBaseClass",
                                                    QLatin1String("Trying to create uncreatable: MyAbstractBaseClass."));

    qmlRegisterUncreatableType<MyAbstractBaseClass, 1>("MyTypes", 1, 1, "MyAbstractBaseClass",
                                                       QLatin1String("Trying to create uncreatable: MyAbstractBaseClass."));

class MyItem : public QObject
{
    Q_OBJECT
    Q_PROPERTY(MySubClass* first READ first WRITE setFirst NOTIFY firstChanged)
    Q_PROPERTY(MySubClass* second READ second WRITE setSecond NOTIFY secondChanged)
    //...

Window {
    visible: true
    width: 360
    height: 360

    MySubClass {
        id: mySubClass
        originalProp: false
        // If MySubClass item is declared like this, it can use revision 1 property just fine
        newProp: false
    }

    MyItem {
        id: myItem

        // This works as expected
        first: mySubClass

        // Using the original revision 0 property from default object like this works just fine:
        second.originalProp: false

        // Using the revision 1 property from default object like this gives an error:
        // --> qrc:///main.qml:28 ".newProp" is not available due to component versioning.
        second.newProp: false
    }
    //...

    console.log("myItem.second.newProp: ", myItem.second.newProp)