app/assets/javascripts/itsf/backend/vendor/jquery.dragtable.js in itsf_backend-1.1.0 vs app/assets/javascripts/itsf/backend/vendor/jquery.dragtable.js in itsf_backend-1.1.1

@@ -395,9 +395,12 @@
   }
 
   function swapNodes(a, b) {
     var aparent = a.parentNode;
     var asibling = a.nextSibling === b ? a : a.nextSibling;
+    if(b === undefined) {
+      return;
+    }
     b.parentNode.insertBefore(a, b);
     aparent.insertBefore(b, asibling);
   }
 })(jQuery);
\ No newline at end of file