Hi there, hmmm that’s a strange one. I’ll speak to the dev team and ask their opinion, as far as I know the height of the page is automatically generated using jquery. So I would assume the only thing that would affect that would be something conflicting with the code, like a plugin. Or you’ve added padding higher up the page to push other elements dowm by x amount and that’s causing it to get cut off. I can’t see anything like that in the inspector though. Let me speak to the dev team and i’ll come back to you.
I see all three menus – http://screencast.com/t/5bopE9nyR