TextEdit QML element inside widget never get back focus

#include <QApplication>
#include <QLabel>
#include <QQuickView>
#include <QTemporaryFile>
#include <QVBoxLayout>

const char *src =
        "import QtQuick 2.3\n"
        "Rectangle {\n"
        "    TextEdit {\n"
        "        anchors.fill: parent\n"
        "        text: \"Hello World!\"\n"
        "        focus: true\n"
        "        selectByMouse: true\n"
        "        selectByKeyboard: true\n"
        "    }\n"
        "}\n";

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QTemporaryFile file; file.open(); file.write(src); file.flush();

    QWidget w;
    QQuickView *view = new QQuickView;
    view->setSource(QUrl::fromLocalFile(file.fileName()));
    QVBoxLayout *vbox = new QVBoxLayout(&w);
    vbox->addWidget(new QLabel("Label"));
    vbox->addWidget(QWidget::createWindowContainer(view));

    w.resize(200, 200);
    w.show();
    return a.exec();
}