I loved most of it, but (1) the search feature, specially for non English language, rely on postgres tokenized search which is worse than slack. (2) there is no "gallery view" for all files shared with a group or a person. (3) The mobile app had different render from the web.. and bad RTL render (4) slack bots compatibility sometimes miss the mark..

Other than that... It worked fine. I kinda liked it but slack is more robust for me (even if slow).