If the white space is only on that page, then the content of the page is simply not 'filling in' the viewport.
The space you see isn't margin, but simply empty space below the content.
I'm pretty sure it's not a bug, just user error.
Try adding minimum height of 100vh on main and see it footer is pushed down. Or just add more sections
It is only on chrome on iPadOS. Add in more sections won't do anything it is already way higher than the viewport. I haven't done anything to the layout other than pasting in Relume components so wondered if it was a Relume or Webflow issue that others have encountered.