Ticket #38526: 38526.diff

src/wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php

@@ -434 +434 @@
                         if ( is_wp_error( $user_id ) ) {
                                 return $user_id;
                         }
+
+                        add_user_to_blog( get_site()->id, $user_id, '' );
                 } else {
                         $user_id = wp_insert_user( $user );
 
@@ -558 +560 @@
 
                 $user = get_user_by( 'id', $id );
 
+                if ( is_multisite() && ! is_user_member_of_blog( $id ) ) {
+                        add_user_to_blog( get_current_blog_id(), $id, '' );
+                }
+
                 if ( ! empty( $request['roles'] ) ) {
                         array_map( array( $user, 'add_role' ), $request['roles'] );
                 }