If you're viewing through a browser then try clearing your browser cache. I was getting lots of weird behavior after the Lemmy 0.18.0 software rollout and clearing my browser cache fixed it.
If you're viewing through the Jerboa app then I think you're out of luck for now. You'll have to wait for updates to be released, or try one of the new Lemmy apps under development: https://lemmy.world/post/465785