It’s quite common for me to have a figure that takes up an entire page. Latex always has trouble placing that page’s number: it usually puts it in the top right. I finally found a Stack Exchange answer that works for me: https://tex.stackexchange.com/questions/238469/page-numbering-on-bottom-center-on-full-page-figure.

What’s also cool is that the overfull messages I would get may be related to the large figures.