There is no Scrollbar on Sidenav on smartphone screens.In SourceCode i see only ps and not ps--active-y in ul-class: custom-scrollbar navbar-light blue-grey lighten-5 side-nav-light ps

The same symptom shows this MDB Example: https://mdbootstrap.com/snippets/jquery/mdbootstrap/98613

A running example is this:https://mdbootstrap.com/snippets/jquery/mdbootstrap/670810

My init code is like this:$('.button-collapse').sideNav({ edge: 'right', // Choose the horizontal origin menuWidth: 240, // Width for sidenav showOverlay: false, // Display overlay showCloseButton: false // Append close button into sidenav }); var sideNavScrollbar = document.querySelector('.custom-scrollbar'); var ps = new PerfectScrollbar(sideNavScrollbar);