moc output does not compile if Q_PROPERTY uses type in a namespace

The following file does not compile; the moc-file declares

static const QMetaObject *qt_meta_extradata_MyObject[] = {
&NS::staticMetaObject,0
};

which is incorrect "staticMetaObject" belongs to the class, not the namespace.

#include <QObject>

namespace NS {
class A : public QObject
{
Q_OBJECT
};
};

class B : public QObject
{
Q_OBJECT
Q_PROPERTY(
NS::A* aProp
READ aProp
)

public:
NS::A * aProp() const

};