Ticket #23369: 23369.patch

wp-includes/comment.php

@@ -367 +367 @@
                         $clauses = $this->meta_query->get_sql( 'comment', $wpdb->comments, 'comment_ID', $this );
                         $join .= $clauses['join'];
                         $where .= $clauses['where'];
-                        $groupby = "{$wpdb->comments}.comment_ID";
+                        if ( !$count ) {
+                                $groupby = "{$wpdb->comments}.comment_ID";
+                        }
                 }
 
                 if ( ! empty( $date_query ) && is_array( $date_query ) ) {