Nothing happens on selection of “Actions” dropdown options
Can you try below patch on shoreditch extension to see if it fixes your problem?

diff --git a/js/main-menu.js b/js/main-menu.js
index c4bd2576..c87ba81d 100644
--- a/js/main-menu.js
+++ b/js/main-menu.js
@@ -63,9 +63,12 @@
    * @return {boolean}
    */
   function isQuickSearchOnGoing () {
-    var searchValue = $('#sort_name_navigation').val() || '';
-
-    return !!searchValue.trim();
+    if ($('#sort_name_navigation') &amp;&amp; $('#sort_name_navigation').val()) {
+      return !!$('#sort_name_navigation').val().trim();
+    }
+    else {
+      return false;
+    }
   }

   /**


Cheers

Pradeep