Missing element in drawer when used with ListView and Section

import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls 2.15

Window {
    id: root
    width: 640
    height: 480
    visible: true

    Button {
        anchors.centerIn: parent
        text: "drawer"
        onClicked: {
            if (drawer.opened)
                drawer.close()
            else
                drawer.open()
        }
    }

    Drawer {
        id: drawer

        width: 0.33 * root.width
        height: root.height
        clip: true
        ListView {
            id: listview

            width: parent.width
            height: parent.height

            clip: true

            model: ListModel {
                id: stackviewmodel

                ListElement {
                    title: "page 1"
                    isVisible: true
                    section: "section 1"
                }
                ListElement {
                    title: "page 2"
                    isVisible: true
                    section: "section 1"
                }
                ListElement {
                    title: "page 3"
                    isVisible: true
                    section: "section 1"
                }
                ListElement {
                    title: "page 4"
                    isVisible: true
                    section: "section 1"
                }
                ListElement {
                    title: "page 5"
                    isVisible: true
                    section: "section 1"
                }

                ListElement {
                    title: "page 1"
                    isVisible: false
                    section: "section 2"
                }
                ListElement {
                    title: "page 2"
                    isVisible: false
                    section: "section 2"
                }

                ListElement {
                    title: "page 1"
                    isVisible: false
                    section: "section 3"
                }
                ListElement {
                    title: "page 2"
                    isVisible: false
                    section: "section 3"
                }

                ListElement {
                    title: "page 1"
                    isVisible: false
                    section: "section 4"
                }
                ListElement {
                    title: "page 2"
                    isVisible: false
                    section: "section 4"
                }
            }

            delegate: ItemDelegate {
                id: controlitemdelegate

                width: parent.width
                height: visible ? 48 : 0
                text: model.title
                visible: model.isVisible
                padding: 0
            }

            section.property: "section"
            section.criteria: ViewSection.FullString

            section.delegate: Component {
                Rectangle {
                    id: sectionDelegate

                    width: parent.width
                    height: visible ? 48 : 0

                    Rectangle {
                        anchors.left: parent.left
                        anchors.right: parent.right
                        anchors.bottom: parent.bottom
                        height: 1
                        color: "green"
                    }

                    Text {
                        id: sectionTxt

                        text: section
                        width: parent.width
                        font.bold: true
                        anchors.right: parent.right
                        anchors.verticalCenter: parent.verticalCenter
                        verticalAlignment: Text.AlignVCenter
                        elide: Text.ElideMiddle
                    }

                    MouseArea {
                        anchors.fill: parent
                        onClicked: {
                            for (var i = 0; i < stackviewmodel.count; i++) {
                                var page = stackviewmodel.get(i)
                                if (page.section === section) {
                                    page.isVisible = !page.isVisible
                                }
                            }
                        }
                    }
                }
            }
            ScrollIndicator.vertical: ScrollIndicator {}
        }
    }
}