Ticket #35156: category-template.php.diff

src/wp-includes/category-template.php

@@ -550 +550 @@
                 $exclude_tree = array();
 
                 if ( $r['exclude_tree'] ) {
-                        $exclude_tree = array_merge( $exclude_tree, (array) $r['exclude_tree'] );
+                        $exclude_tree = array_merge( $exclude_tree, wp_parse_id_list( $r['exclude_tree'] ) );
                 }
 
                 if ( $r['exclude'] ) {
-                        $exclude_tree = array_merge( $exclude_tree, (array) $r['exclude'] );
+                        $exclude_tree = array_merge( $exclude_tree, wp_parse_id_list( $r['exclude'] ) );
                 }
 
                 $r['exclude_tree'] = $exclude_tree;