Don't use :has selector

program/js/app.js

@@ -1859,9 +1859,9 @@ function rcube_webmail()
     var focus_menu_item = function(dir) {
       var obj, item, mod = dir < 0 ? 'prevAll' : 'nextAll', limit = dir < 0 ? 'last' : 'first';
       if (ref.focused_menu && (obj = $('#'+ref.focused_menu))) {
-        item = obj.find(':focus').closest('li')[mod](':has(:not([aria-disabled=true]))').find('a,input')[limit]();
+        item = obj.find(':focus').closest('li')[mod]().has(':not([aria-disabled=true])').find('a,input')[limit]();
         if (!item.length)
-          item = obj.find(':focus').closest('ul')[mod](':has(:not([aria-disabled=true]))').find('a,input')[limit]();
+          item = obj.find(':focus').closest('ul')[mod]().has(':not([aria-disabled=true])').find('a,input')[limit]();
         return item.focus().length;
       }
 

program/js/treelist.js

@@ -204,7 +204,7 @@ function rcube_treelist_widget(node, p)
         $(get_item(selection)).find(':focusable').first().focus();
       }
       else if (!has_focus) {
-        container.children('li:has(:focusable)').first().find(':focusable').first().focus();
+        container.children('li').find(':focusable').first().focus();
       }
     });
   }