Menu dropdown "back" button is cut-off on mobile version

Site URL: https://doclulu.com/

On mobile, iOs (Safari & Chrome)... the back button in the menu dropdown is cut-off. Don't know how to fix it. Can someone help?

I had the same issue.  After not being able to find any guidance on the web,  I think this fixed it in custom CSS. 

.Mobile-overlay-folder-item--toggle-label {
 line-height: .8em;
}