Why do posts on Lemmy continue to load while I'm browsing the page?

As the question asks, my page has apparently finished loading and I am scrolling through, then all of a sudden posts begin to appear again at the top of the list pushing down where I am currently at. It isn't just one or two posts, sometimes it's a waterfall of posts. I guess they are loading in async.

Is there some setting I can change to stop this, do I have my filters wrong. I'm normally browsing with All, then I switch to Active or Hot, but it seems to happen with any way I have it set.