Ticket #23634: 23634.3.diff

src/wp-includes/class-walker-comment.php

@@ -130 +130 @@
                 $id_field = $this->db_fields['id'];
                 $id = $element->$id_field;
 
+                if ( isset( $element->comment_ID ) ) {
+                        /**
+                         * Fires after each comment.
+                         *
+                         * @since 4.4.0
+                         */
+                        do_action( 'after_comment' );
+                }
+
                 parent::display_element( $element, $children_elements, $max_depth, $depth, $args, $output );
 
                 // If we're at the max depth, and the current element still has children, loop over those and display them at this level