The menu items for users.php and profile.php that require the promote_users cap should be wrapped in an is_multisite() conditional a la user-new.php.

staylor · staylor · commit dad44082a7ae · 2014-11-30T19:17:44.000Z
Props SergeyBiryukov. Fixes #30526. git-svn-id: https://develop.svn.wordpress.org/trunk@30659 602fd350-edb4-49c9-b593-d223f7449a82
diff --git a/src/wp-admin/menu.php b/src/wp-admin/menu.php
@@ -206,19 +206,21 @@ function _add_themes_utility_last() {
 if ( current_user_can('list_users') ) {
 	$_wp_real_parent_file['profile.php'] = 'users.php'; // Back-compat for plugins adding submenus to profile.php.
 	$submenu['users.php'][5] = array(__('All Users'), 'list_users', 'users.php');
-	if ( current_user_can('create_users') )
+	if ( current_user_can( 'create_users' ) ) {
 		$submenu['users.php'][10] = array(_x('Add New', 'user'), 'create_users', 'user-new.php');
-	else
+	} elseif ( is_multisite() ) {
 		$submenu['users.php'][10] = array(_x('Add New', 'user'), 'promote_users', 'user-new.php');
+	}
 
 	$submenu['users.php'][15] = array(__('Your Profile'), 'read', 'profile.php');
 } else {
 	$_wp_real_parent_file['users.php'] = 'profile.php';
 	$submenu['profile.php'][5] = array(__('Your Profile'), 'read', 'profile.php');
-	if ( current_user_can('create_users') )
+	if ( current_user_can( 'create_users' ) ) {
 		$submenu['profile.php'][10] = array(__('Add New User'), 'create_users', 'user-new.php');
-	else
+	} elseif ( is_multisite() ) {
 		$submenu['profile.php'][10] = array(__('Add New User'), 'promote_users', 'user-new.php');
+	}
 }
 
 $menu[75] = array( __('Tools'), 'edit_posts', 'tools.php', '', 'menu-top menu-icon-tools', 'menu-tools', 'dashicons-admin-tools' );
