Q_DECLARE_METATYPE_TEMPLATE_1ARG does not work as expected

Q_DECLARE_METATYPE_TEMPLATE_1ARG does not work in Qt5.2.0 Beta1 as it should. It definitely works different as in Qt5.1.1.

AFAIK I learned the following code should compile (actually it does using 5.1.1) but it does not using 5.2.0:

template <class T> class Container
{
};
 
Q_DECLARE_METATYPE_TEMPLATE_1ARG(Container)
 
inline void Test()
{
   QVariant x = QVariant::fromValue(Container<int>());
}

Source is this forum discussion: https://qt-project.org/forums/viewthread/34806/