--- a/qpy/QtQml/qpyqml_register_type.cpp    2017-02-23 03:32:51.000000000 +0100
+++ b/qpy/QtQml/qpyqml_register_type.cpp    2017-02-25 03:32:58.000000000 +0100
@@ -124,13 +124,13 @@
 
 #define QPYQML_TYPE_INIT(n) \
     case n##U: \
-        QPyQmlObject##n::staticMetaObject = *mo; \
+        QPyQmlObject##n::staticMetaObject = static_mo; \
         QPyQmlObject##n::attachedPyType = attached; \
         rt->typeId = qRegisterNormalizedMetaType<QPyQmlObject##n *>(ptr_name); \
         rt->listId = qRegisterNormalizedMetaType<QQmlListProperty<QPyQmlObject##n> >(list_name); \
         rt->objectSize = ctor ? sizeof(QPyQmlObject##n) : 0; \
         if (ctor) rt->create = QQmlPrivate::createInto<QPyQmlObject##n>; else rt->create = 0; \
-        rt->metaObject = mo; \
+        rt->metaObject = &QPyQmlObject##n::staticMetaObject; \
         rt->attachedPropertiesFunction = attached_mo ? QPyQmlObject##n::attachedProperties : 0; \
         rt->attachedPropertiesMetaObject = attached_mo; \
         rt->parserStatusCast = is_parser_status ? QQmlPrivate::StaticCastSelector<QPyQmlObject##n,QQmlParserStatus>::cast() : -1; \
@@ -219,7 +219,33 @@
         return 0;
     }
 
-    const QMetaObject *mo = pyqt5_qtqml_get_qmetaobject(py_type);
+    const QMetaObject *orig_mo = pyqt5_qtqml_get_qmetaobject(py_type);
+    QMetaObject static_mo = *orig_mo;
+
+#if QT_VERSION >= 0x050800
+    // Qt v5.8.0 changed the way properties are handled by directly calling a
+    // class's static meta-call (if there was one) directly.  This bypasses the
+    // proxy and calls the static meta-call with a pointer to the proxy rather
+    // than a pointer to the real object.  To work round this we clone the
+    // QMetaObject chain and remove the references to the static meta-call
+    // forcing the earlier behaviour.  This approach may also work with earlier
+    // versions of Qt - but if it ain't broke...
+    static_mo.d.static_metacall = 0;
+
+    QMetaObject *sub_mo = &static_mo;
+
+    // By retaining the QObject static meta-object we don't appear to be a
+    // gadget.
+    for (const QMetaObject *mo = sub_mo->d.superdata; mo != &QObject::staticMetaObject; mo = mo->d.superdata)
+    {
+        QMetaObject *new_mo = new QMetaObject;
+        *new_mo = *mo;
+        new_mo->d.static_metacall = 0;
+
+        sub_mo->d.superdata = new_mo;
+        sub_mo = new_mo;
+    }
+#endif
 
     // See if the type is a parser status.
     bool is_parser_status = PyType_IsSubtype(py_type,
@@ -272,7 +298,7 @@
 
     if (qquickitem_register)
     {
-        sipErrorState estate = qquickitem_register(py_type, mo, ptr_name,
+        sipErrorState estate = qquickitem_register(py_type, orig_mo, ptr_name,
                 list_name, &rt);
 
         if (estate == sipErrorFail)