In Qml, "children" property always having length zero

In the attached example, it was expected that "root.children" list wasn't empty (zero length). I think this is related to the following facts:

• "children" property is the one implemented in QObject;
• QDeclarativeItem::setParentItem not longer uses QObject parent-hood as before since commit 6f88388db4e8e202780d789e66664ff824691948. I think "children" used to work because of that, but was incorrect since QGraphicsItems shouldn't also use QObject parent-hood (so, in my understanding the commit itself is correct).

Even accounting those two facts, I was expecting in the test case to get at least length == 1, since there's a QtObject in the tree as well. But I didn't checked whether this QtObject is wrapped into a QDeclarativeItem as well.

I tested with commit db9bfd3653de23693db67ec5a0534e4d4ac97f7d from 4.7 branch.