SwipeDelegate's contentItem is not resized automatically when the control's height changes

import QtQuick 2.8
import QtQuick.Window 2.2
import QtQuick.Controls 2.1

Window {
    visible: true
    width: 300
    height: 480
    title: qsTr("Hello World")

    SwipeDelegate {
        id: swipeDelegate
        text: "Howwwwwwwwwwwwwwwwww"
        width: parent.width

        NumberAnimation {
            id: anim
            target: swipeDelegate
            property: "height"
            to: 0
            easing.type: Easing.InOutQuad
        }

        swipe.right: Row {
            anchors.right: parent.right
            height: parent.height

            Label {
                id: deleteLabel
                text: qsTr("Delete")
                color: "white"
                verticalAlignment: Label.AlignVCenter
                padding: 12
                height: parent.height

                SwipeDelegate.onClicked: anim.start()

                background: Rectangle {
                    color: deleteLabel.SwipeDelegate.pressed ? Qt.darker("tomato", 1.1) : "tomato"
                }
            }
        }
    }
}