Extra section appearing below color section

Hello!

I have a page with a color section set as white background, and for some reason, an extra section is appearing below (between the end of the page body and footer) that shows the default page background color.

I have other pages set up exactly the same that don’t have this problem, and this one was working ok but when I tried to add a whitespace separator, the extra section appeared. Layout debugging is turned on but I am not seeing an issue there.

Any idea what is causing this/how to fix it? Links to the page and a marked screenshot are below.

Thanks in advance for your help!