The TextArea: horizontal scroll bar never appears

import QtQuick 2.5
import QtQuick.Controls 1.4
import QtQuick.Dialogs 1.2
import QtQuick.Layouts 1.2

ApplicationWindow
{
    id: window
    width: 800
    height: 600
    visible: true
    title: qsTr("Test window")

    TextArea
    {
        id: text
        visible: true
        horizontalScrollBarPolicy: Qt.ScrollBarAlwaysOn
        anchors.fill: parent
    }
}