This is my #1 complaint about the site on mobile since the new skin came out.

I think it's because something that loaded asynchronously (maybe an image or CSS file) is applied which changes the height and it triggers the infinite scroll functionality. That's just a hunch though, I can't reproduce it reliably but it definitely happens a noticeable amount.

A possibly-related issue is that there's no way to get up to the wikipost any more. I used to be able to tap on the status bar clock (which scrolls to the top on iOS) but now when I do that it really quickly loads the previous page so I have to repeat over and over until I get all the way back to page 1

I have an iPhone 7 plus running the latest version of iOS 11