Frequently refreshing web pages in Safari

I use an iPad Mini 2 with Safari, iOS up to date. For some time, starting at least with iOS 11 and perhaps later versions of 10, certain websites frequently scroll back to the top on their own while I'm reading down below. I've assumed they are refreshing and that's what is causing it, but maybe there's something in the interaction between their specific interfaces and the iOS that's involved. Examples are the New York Times website and the forums section of psaudio.com. Some months ago, I wrote the NYT about it, but they claimed it was not their doing, to write Apple. It doesn't seem to happen all the time with these sites, but a lot, and sometimes when it gets going it happens repeatedly, then seems to finally settle down. Or maybe it's because my stylus is locked into the screen to try to prevent it happening again. Longer articles and forum threads (down the page) especially seem to elicit the behavior, or maybe that's where I notice it the most. Obviously, when it occurs, it's annoying, making it hard to read.