All of the communication between your browser and the server is being overhauled in the next version of Lemmy, and it seems that for the time being, this will also disable live updates!
The default webui needs many updates to become more usable for a wider range of users. I also don't like how the page updates wildly when I'm trying to read through. Either the updating should work more smoothly to not make the user disoriented, or maybe have a preference for paged scrolling or something along those lines...