Flickable doesn't update the screen when scrolling

import QtQuick
import QtQuick.Layouts

Window {
    id: root

    width: 360
    height: 480
    visible: true

    Flickable {
        anchors.fill: parent
        contentHeight: repeater.implicitHeight

        ColumnLayout {
            id: repeater

            Repeater {
                model: 100

                Rectangle {
                    width: root.width
                    height: 60
                    color: "green"

                    Text {
                        anchors.centerIn: parent
                        text: model.index
                    }
                }
            }
        }
    }
}