title: menus and menuitems now show in odoo 14
body: <p>I just recently migrated to odoo 14.
  <br/>
  here I am facing an issue with menus.
  I have added a menu with menu items but it does not show.</p>
  <p>here is my simple code for xml.</p>
  <pre><code>&lt;menuitem id=&quot;root_menu&quot; name=&quot;Documents&quot;/&gt;
  &lt;menuitem
      id=&quot;menu_attachment_document&quot;
      name=&quot;Documents&quot;
      parent=&quot;root_menu&quot;
      sequence=&quot;1&quot;/&gt;
  &lt;menuitem
      id=&quot;menu_attachment_child&quot;
      name=&quot;Documents&quot;
      parent=&quot;menu_attachment_document&quot;
      action=&quot;base.action_attachment&quot;
      sequence=&quot;2&quot;/&gt;
  </code></pre>