Strange behavior of QQuickView and QMainWindow

[A Former User]

I have Qt 5.2 and have next problem:

On my QMainwindow i have QQuickView, which is inserted into layout like this:

@
QQuickView * view = new QQuickView;
container = QWidget::createWindowContainer(view, this);--
container->setFocusPolicy(Qt::TabFocus);
view->setSource(QUrl("qrc:/qml/main.qml"));
ui->layout->addWidget(container);
@

ui->layout - cover all mainwidow size

Then on some action i am creating other QQmlView as dialog( window ), with the same code except i don't putting it to container. And show it :

@
QQuickView * dialog = new QQuickView;

    dialog->setResizeMode(QQuickView::SizeRootObjectToView);
    dialog->setSource(QUrl("qrc:/qml/main.qml"));

    view->show();

@

And strange thing that and mainwindow and this dialog start display the same. Other words dialog embends into mainwindow too. How to avoid this ?