Remove Admin Toolbar "Manage" item if User has No Access
TLTTP;

Is a core bug since 6.4 version (https://www.drupal.org/node/296693) you can use the latest version of admin_toolbar (https://drupal.org/project/admin_toolbar) which haves a submodule specific for that issue. Unfortunately this only works for 'admin_menu' menu but not the toolbar menu (the black bar on top). To hide specific toolbar elements or toolbar element tray links (toolbar element links) you can implement hook_toolbar_alter(&amp;$items) hook (https://api.drupal.org/api/drupal/core!modules!toolbar!toolbar.api.php/8.5.x).

Hope it helps someone.