When I go search for communities I pretty much never get results even if I know certain communities exist. I think the search is only searching the titles maybe? Needs to search the description at least and have fairly loose matching results. Otherwise it’ll come to a point where you have to slog through lists and lists and lists.
Search cannot be set to anything else but All. It springs back to All as soon as I select something else. I think it reloads the page.