Can't find settings to fix mobile menu spacing.

Hello! I'm running into an issue with a mobile site that I haven't experienced on other sites. Someone started creating this website before me, so I'm not sure if they changed any settings. I cannot figure out how to fix this really long menu view. I want to remove all of the extra white space. 

Can you send a link to the site?

If you test it on your mobile you'll likely find it looks 'normal'. Without looking into the code I'd assume it's because the overlay menu is set to cover the full height of the screen, but the Squarespace mobile editor view height is much taller than an actual phone screen so this will look stretched here