Menu does not open on mobile width

[joeldom]

Clicking the menu icon in Chrome does not open the menu

[saddam-azad]

Have you tried refreshing the page after resizing the window?

[RobertinoValue]

I'm a bit late to the party, but I only just discovered this Repo. Like an hour ago.
Bumped into this same issue. Resolved it by changing script.js like this :
Soft-deleted the visibility check for the hamburger menu icon.
Re-Added the exact same check withinthe 2 event handlers it was at first containing :

    /*
    *   Applicable only to Mobile-nav
    */

        // Checking if the top-right button is visible.
        //SOFT-DELETE: if ($("nav a.btn-navbar").is(":visible")) {

            // Making the dropdown magically appear onclick/touch.
            $('nav a.btn-navbar').on('click', function() {
                if ($("nav a.btn-navbar").is(":visible")) { //RE-ADDED HERE
                    $('ul#menu').slideToggle('fast', function() {
                        $('ul#menu').css({

                            // The height must be fixed for the native scrolling on iOS
                            'height': $(this).height(),

                            // But we don't want the height of the nav to exceed the viewport.
                            'max-height': $(window).height() + 20
                        });
                    });
                }

                $(this).toggleClass('active');

            }); // end on.click

            // Making the children appear on click/touch
            $('ul#menu li.hasChildren a').on('click', function() {
                if ($("nav a.btn-navbar").is(":visible")) { //RE-ADDED HERE
                    $(this).parent().children('ul').slideToggle('fast', function() {

                        $('ul#menu').css({

                            // Resetting the height to auto in order to expand/contract the menu upon interaction.
                            'height': 'auto',

                            // But we don't want the height of the nav to exceed the viewport.
                            'max-height': $(window).height() + 20
                        });

                    }); // end slideToggle
                }

            }); // end on.click

        //SOFT-DELETE: } // end visibility check