Headers no longer showing on certain pages

Site URL: https://rachelskim.me/

Hi Everyone! So, my website's headers are no longer populating or showing when I publish my site for my "Work" and "About" sections.

But, when I go into edit mode, it shows. I added two photos for reference.  I also tried changing the fonts as well - no difference.

Does anyone know what is the issue could be?

thank you @tuanphan! It seems like it may have just been a rendering error on my end. Thanks again!