Cut down version of applet.js with scrollview popup submenus

applet.js

/** Allows import of other files e.g. const GitHub=imports.github; = github.js */
imports.searchPath.push(imports.ui.appletManager.appletMeta["github-projects@morgan-design.com"].path);

/** Imports START **/
const Mainloop = imports.mainloop;
const Lang = imports.lang;
const Gettext = imports.gettext.domain('cinnamon-applets');
const _ = Gettext.gettext;
const Cinnamon = imports.gi.Cinnamon;
const St = imports.gi.St;
const Gtk = imports.gi.Gtk;

const Applet = imports.ui.applet;
const Util = imports.misc.util;
const GLib = imports.gi.GLib;

const PopupMenu = imports.ui.popupMenu;
const Main = imports.ui.main;

const Tooltips = imports.ui.tooltips;
const Settings = imports.ui.settings;

const Notify = imports.gi.Notify;

const CinnamonVersion = imports.misc.config.PACKAGE_VERSION;
/** Imports END **/

/** Custom Files START **/
const GitHub = imports.github;
const Logger = imports.logger;
/** Custom Files END **/

const APPLET_ICON = global.userdatadir + "/applets/github-projects@morgan-design.com/icon.png";

/* Application Hook */
function main(metadata, orientation, instance_id) {
    let myApplet = new MyApplet(metadata, orientation, instance_id);
    return myApplet;
}

/* Constructor */
function MyApplet(metadata, orientation, instance_id) {
    this._init(metadata, orientation, instance_id);
}

MyApplet.prototype = {
    __proto__: Applet.IconApplet.prototype,

    _init: function (metadata, orientation, instance_id) {

        Applet.IconApplet.prototype._init.call(this, orientation, instance_id);

        this.metadata = metadata;

        try {
            this.set_applet_icon_path(APPLET_ICON);

            let self = this;

            this._maincontainer = new St.BoxLayout({name: 'repocontainer', vertical: true});//, reactive:true, track_hover:true
            this._notificationbin = new St.BoxLayout({vertical:true});

            this.menu_label = new PopupMenu.PopupMenuItem("GitHub Explorer!");
            this.menu_label.actor.reactive = true;
            this.menu_label.actor.can_focus = true;
            this.menu_label.label.add_style_class_name('popup-subtitle-menu-item');

            this.clear_separator = new PopupMenu.PopupSeparatorMenuItem();
            this.clear_action = new PopupMenu.PopupMenuItem(_("Clear notifications"));
            this.clear_action.connect('activate', Lang.bind(this, function () {
                self.logger.debug('CLICKED CLEAR!');
            }));
            this.clear_action.actor.show(); // show()/hide() Item

            if (this.menu) {
                this.menu.destroy();
            }
            this.menu = new Applet.AppletPopupMenu(this, orientation);
            this.menu.addMenuItem(this.menu_label);
            this.menu.addActor(this._maincontainer);
            this.menu.addMenuItem(this.clear_separator);
            this.menu.addMenuItem(this.clear_action);

            this.menuManager = new PopupMenu.PopupMenuManager(this);
            this.menuManager.addMenu(this.menu);

            this.scrollview = new St.ScrollView({ x_fill: true, y_fill: true, y_align: St.Align.START, style_class: "vfade"});
            this._maincontainer.add(this.scrollview);
            this.scrollview.add_actor(this._notificationbin);
            this.scrollview.set_policy(Gtk.PolicyType.NEVER, Gtk.PolicyType.AUTOMATIC);

            let vscroll = this.scrollview.get_vscroll_bar();
            vscroll.connect('scroll-start', Lang.bind(this, function() {
                self.menu.passEvents = true;
            }));
            vscroll.connect('scroll-stop', Lang.bind(this, function() {
                self.menu.passEvents = false;
            }));

            // Loop round lots to fill the screen and create the scrollable view
            for (i = 0; i < 60; i++) {

                // Main Menu Item
                let menuItem1 = new PopupMenu.PopupSubMenuMenuItem("Sub Menu");
                let imgSubMenuItem1 = this._createPopupImageMenuItem("Image Sub Menu Item 1", "web-browser-symbolic", function () {
                    global.log("Clicked!");
                });
                let imgSubMenuItem2 = this._createPopupImageMenuItem("Image Sub Menu Item 2", "web-browser-symbolic", function () {
                    global.log("Clicked!");
                });
//                openRepoItem.actor._parent_container = this._maincontainer;
                menuItem1.actor.reactive = true;
                menuItem1.actor.can_focus = true;
                menuItem1.menu.addMenuItem(imgSubMenuItem1);
                menuItem1.menu.addMenuItem(imgSubMenuItem2);

                this._notificationbin.add(menuItem1.actor);
                menuItem1.actor._parent_container = this._notificationbin;
            }
        }
        catch (e) {
            global.logError(e);
        }
    },

    on_applet_clicked: function (event) {
        this.menu.toggle();
    },

    on_applet_removed_from_panel: function () {
        this.settings.finalize(); // We want to remove any connections and file listeners here
    },

    _createPopupImageMenuItem: function (title, icon, bindFunction, options) {
        let options = options || {};
        let openRepoItem = new PopupMenu.PopupImageMenuItem(title, icon, options);
        openRepoItem.connect("activate", Lang.bind(this, bindFunction), { reactive: true });
        return openRepoItem;
    }

};

I am trying to have a scrollable view which seem sot work well however the popup items inside the vierw are no longer reactive and dont expand when clicked, any ideas?

imgSubMenuItem1 and imgSubMenuItem2 never get displayed when you click on menuItem1?