StackView should clear focus when a new item is pushed

import QtQuick 2.6
import QtQuick.Window 2.2
import Qt.labs.controls 1.0

ApplicationWindow {
    width: 600
    height: 400
    visible: true

    Component {
        id: page1

        Column {
            id: column

            Label {
                text: "Page 1"
            }

            Button {
                text: "Go to page 2"
                onClicked: column.StackView.view.push(page2)
            }
        }
    }

    Component {
        id: page2

        Label {
            text: "Page 2"
        }
    }

    StackView {
        anchors.fill: parent
        initialItem: page1
    }
}