Here on Meta and also on the forum I admin, I often (but not always) notice a weird UX behavior with scrolling down in a topic. When the scrolling motion/event is done, the browser’s top bar and bottom buttons reappear as if I had scrolled up, without any interaction on my part.
Here’s a video which illustrates the issue. Note that I am only scrolling down, the brief scroll-up & browser elements reappearing at the end of the scrolling movement is the issue.
The video shows it happening after scrolling down twice, and then it does not happen after a third scroll down.
It does not seem to happen when scrolling in other pages such as search results. I don’t see anything like this on desktop, just on my iPhone.
Perhaps a minor issue, but I find it quite jarring!