Yeah, I had this problem too on one page. I clicked on another article and it worked. Looks like it is a little buggy (founder take note!)

Yes, I am aware of the issue (see my recent comment on one of the parent comments).

I am afraid that it is an issue with the way some browsers render the CSS sticky position. If you have any CSS knowledge, I would greatly appreciate your input!

For my information, which browser do you use?

I tried both Google Chrome and Firefox (also, Brave)