Footnote in the wrong place

What could be causing this? No matter what I've tried, this footnote will not show up at the foot of the page (see screenshot). I deleted the note and made it again. It's still wrong. Something about it being a footnote in that header. Is there a setting somewhere that makes this happen? I tested it out with other headers in my book using the same style and as soon as I add a footnote, it's placed right below the header: