StackView: replacing of the topmost item clears the whole stack

import QtQuick 2.5
import QtQuick.Layouts 1.3
import Qt.labs.controls 1.0

ApplicationWindow {
    visible: true
    width: 640
    height: 480

    Component {
        id: firstComponent

        Item {
            Text {
                anchors.centerIn: parent
                text: "The first item"
            }
        }
    }

    Component {
        id: secondComponent

        Item {
            Text {
                anchors.centerIn: parent
                text: "The second item"
            }
        }
    }

    Component {
        id: newComponent

        Item {
            Text {
                anchors.centerIn: parent
                text: "The new item"
            }
        }
    }

    ColumnLayout {
        anchors.fill: parent
        spacing: 10

        StackView {
            id: stackView

            Layout.fillHeight: true
            Layout.fillWidth: true

            onDepthChanged: console.log("depth:", depth)
        }

        Row {
            Layout.alignment: Qt.AlignHCenter
            spacing: 10

            Button {
                text: "Replace"
                onClicked: stackView.replace(stackView.get(1), newComponent)
            }

            Button {
                text: "Pop"
                onClicked: stackView.pop()
            }
        }
    }

    Component.onCompleted: stackView.push([ firstComponent, secondComponent ])
}