Refs #17498 - Comment.

extension/Classes/Core/BuildFormBootstrap.php

@@ -989,6 +989,7 @@ class BuildFormBootstrap extends AbstractBuildForm {
      */
     public function buildPreviousNextButtons($btnPreviousNextSqlArr, $currentRecordId, $btnPreviousNextLoopFlag) {
 
+        // No records selected
         if (empty($btnPreviousNextSqlArr)) {
             return '';
         }