title: Sub-Submenu not appearing on mobile device
body: <p>After asking <a href="https://stackoverflow.com/questions/43024045/">this question</a>, I was able to I was able to add sub-submenu support to my site. However, on mobile, the menus just appear as blank lines.</p>
  
  <p><img src="https://i.imgur.com/QLBdlNs.png" alt="sub submenu error"></p>