Ticket #33313: 33313.patch

wp-admin/includes/class-wp-list-table.php

@@ -1258 +1258 @@
          * @return string The row actions output. In this case, an empty string.
          */
         protected function handle_row_actions( $item, $column_name, $primary ) {
-                return '';
+                return $column_name == $primary ? '<button type="button" class="toggle-row"><span class="screen-reader-text">' . __( 'Show more details' ) . '</span></button>' : '';
         }
 
         /**