QML TextEdit (and TextArea) crashs after hide window and than show it again

There is QList<Node*> textNodeMap in QQuickTextEditPrivate ( qtdeclarative\src\quick\items\qquicktextedit.cpp ):
void QQuickTextEditPrivate::addCurrentTextNodeToRoot(QSGTransformNode *root, QQuickTextNode *node, TextNodeIterator &it, int startPos)
{
node->m_engine->addToSceneGraph(node, QQuickText::Normal, QColor());
it = textNodeMap.insert(it, new TextNode(startPos, node));
++it;
root->appendChildNode(node);
}
So, "textNodeMap" contains pointer to "node". But "node" is child of "root". When we hide the window RootNode "root" is destroing with all its children ( QSGWindowsRenderLoop::hide(QQuickWindow *window) ). And we have invalid pointers inside textNodeMap. After destroing RootNode we should probably clear "textNodeMap" ( i.e., in updatePaintNode(...) ):
if( !oldNode ){
TextNodeIterator nodeIterator = d->textNodeMap.begin();
while (nodeIterator != d->textNodeMap.end())

d->textNodeMap.clear();
}