QmlDesigner.propertyEditor: setting a value in intial setup

src/plugins/qmldesigner/components/propertyeditor/propertyeditor.cpp

@@ -88,6 +88,7 @@ void setupPropertyEditorValue(const QString &name, QmlPropertyMap *propertyMap,
         propertyMap->insert(propertyName, QVariant::fromValue(valueObject));
     }
     valueObject->setName(propertyName);
+    valueObject->setValue(QVariant(""));
 }
 
 void createPropertyEditorValue(const QmlObjectNode &fxObjectNode, const QString &name, const QVariant &value, QmlPropertyMap *propertyMap, PropertyEditor *propertyEditor)