Do you mean something other than https://beehaw.org/communities ? It has a local/all toggle and a search function. On the web interface, it's on the header of every page.
I grew up playing the EV series and I love Endless Sky. Is there something about the clone that you don't like? I can't thing of a change that I dislike. For example, fleet management is improved. Being able to dock your various ships and escorts is pretty cool.
It happened to me on a PC browser. After clicking on a post, I hit the browser back button. The top of my "all" feed reappeared with ~20 posts from a single smallish community on another instance. They weren't there before. Scrolling down, the previous feed resumed, so it seemed like those new stray posts were stacked at the top of my "all" queue.