Exposing C++ enums to QML no longer working

class ApplicationManager : public QObject
{
    Q_OBJECT
    Q_ENUMS(Roles)

public:
    ApplicationManager(QObject* parent = 0) {}

    enum Roles {
        RoleAppId = Qt::UserRole,
        RoleName,
        RoleComment,
        RoleIcon,
        RoleStage,
        RoleState,
        RoleFocused,
    };
};

static QObject* applicationManagerSingleton(QQmlEngine* engine, QJSEngine* scriptEngine) {
    Q_UNUSED(engine);
    Q_UNUSED(scriptEngine);

    return new ApplicationManager;
}

class FooPlugin : public QQmlExtensionPlugin {
    Q_OBJECT
    Q_PLUGIN_METADATA(IID "org.qt-project.Qt.QQmlExtensionInterface/1.0")

    virtual void registerTypes(const char* uri)
    {
        Q_ASSERT(QLatin1String(uri) == QLatin1String("Foo"));

        qmlRegisterSingletonType<ApplicationManager>(
                    uri, 0, 1, "ApplicationManager", applicationManagerSingleton);
    }
};

import Foo 0.1

Item {
    Component.onCompleted: {
        console.log("ApplicationManager = " + ApplicationManager);
        console.log("ApplicationManager.RoleComment = " + ApplicationManager.RoleComment);
    }
}

import Foo 0.1 as Bar

Item {
    Component.onCompleted: {
        console.log("Bar.ApplicationManager = " + Bar.ApplicationManager);
        console.log("Bar.ApplicationManager.RoleComment = " + Bar.ApplicationManager.RoleComment);
    }
}