Hi cakeantidote,
I tried to replicate your issue but can’t seem to see it here. Are you seeing this in both the editor and the live site? You also said you see it on ‘some of the pages’, can you let me know which pages you see the issue on? And does it happen on all breakpoints?
If you open the site and right-click / inspect element on the footer, this should lead you pretty quickly to where that white space lies, so you can correct it in the design. I’d be happy to look as well, of course, as soon as I can reproduce the issue.