So I've had this problem with a couple sites now and I'm not too sure what's happening.
The problem is the hamburger menu on mobile devices is being cut off at the bottom. Meaning the last link in the menu has been trimmed by about a quarter. It doesn't make any sense as I haven't assigned a height at all.
When inspecting the element, there is a class 'w-nav-overlay' which seems to be assigning a height for some unknown reason. Plus I've no control over that class.
If anyone has any ideas, that would be awesome!