Ticket #25545: 25545.diff

src/wp-includes/ms-functions.php

@@ -277 +277 @@
                 $reassign = (int) $reassign;
                 $wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET post_author = %d WHERE post_author = %d", $reassign, $user_id) );
                 $wpdb->query( $wpdb->prepare("UPDATE $wpdb->links SET link_owner = %d WHERE link_owner = %d", $reassign, $user_id) );
+
+                // clean post cache for reassigned posts
+                $post_ids = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_author = %d", $reassign ) );
+                array_map( 'clean_post_cache', $post_ids );
         }
 
         restore_current_blog();