qmllint doesn't see properties from base classes

class ParameterizedColorControlsItemQml : public QQuickPaintedItem {
    Q_OBJECT
    QML_ELEMENT
public:
    Q_PROPERTY(QString colorTransferModel ...)
};

class ParameterizedColorControlsItemQmlWithDialog : public ParameterizedColorControlsItemQml {
    Q_OBJECT
    QML_ELEMENT
    // ...
};

Column {
    ParameterizedColorControlsItemQmlWithDialog {
        colorTransferModel: "ColorTransferModel"
        height: 160
        width: parent.width
    }
}

Warning: ColorControlsMenu.qml:120:21: Cannot assign to default property of incompatible type [incompatible-type]
                    ParameterizedColorControlsItemQmlWithDialog {
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Warning: ColorControlsMenu.qml:125:25: Binding assigned to "colorTransferModel", but no property "colorTransferModel" exists in the current element. [missing-property]
                        colorTransferModel: {
                        ^^^^^^^^^^^^^^^^^^
Warning: ColorControlsMenu.qml:128:25: Binding assigned to "height", but no property "height" exists in the current element. [missing-property]
                        height: 160
                        ^^^^^^
Warning: ColorControlsMenu.qml:129:25: Binding assigned to "width", but no property "width" exists in the current element. [missing-property]
                        width: parent.width
                        ^^^^^