TabBar reset current index to -1 on completion

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

ApplicationWindow {
    visible: true
    width: 640
    height: 480

    ColumnLayout {
        anchors.fill: parent

        TabBar {
            id: tabBar

            Layout.fillHeight: false
            Layout.fillWidth: true

            // currentIndex: 0

            TabButton {
                text: "Test"
            }
        }

        StackLayout {
            Layout.fillHeight: true
            Layout.fillWidth: true
            currentIndex: tabBar.currentIndex

            Rectangle {
                anchors.fill: parent
                color: "red"
            }
        }
    }
}