Ticket #39643: 39643.2.diff

src/wp-includes/class-wp-user-query.php

@@ -522 +522 @@
                                 $search = trim($search, '*');
 
                         $search_columns = array();
-                        if ( $qv['search_columns'] )
-                                $search_columns = array_intersect( $qv['search_columns'], array( 'ID', 'user_login', 'user_email', 'user_url', 'user_nicename' ) );
+                        if ( $qv['search_columns'] ) {
+                                $search_columns = array_intersect( $qv['search_columns'], array( 'ID', 'user_login', 'user_email', 'user_url', 'user_nicename', 'display_name' ) );
+                        }
                         if ( ! $search_columns ) {
                                 if ( false !== strpos( $search, '@') )
                                         $search_columns = array('user_email');