Menu Button dropdown in tablet and below not dropping down at right position

Hi. When in tablet/mobile view my menu button is putting the menu box half way down on the page rather than dropping down from the button.

I created an identical nav bar using same settings (I thought) and that one’s working fine so I cant figure out what I’m missing. My work around will be to just use the new bar, but then I’ll have to swap them out throughout the site. Figured would be good to understand what Im missing if I can.