Updating direct messages code

web/react/components/more_direct_channels.jsx

@@ -54,7 +54,7 @@ export default class MoreDirectChannels extends React.Component {
     }
 
     onShow() {
-        if ($(window).width() > 768) {
+        if (!Utils.isMobile()) {
             $(ReactDOM.findDOMNode(this.refs.userList)).perfectScrollbar();
             $(ReactDOM.findDOMNode(this.refs.userList)).css('max-height', $(window).height() - 300);
         } else {