That must be LazyCat’s version. It added animations for waiting, etc, but I don’t recall it fixing the save one.
I finally decided to use Cygwin to play this game, as almost any new commit is a good reason to be up to date (lots of fixes and good additions, although lacking backwards compatibility). From what I gather from the latest version on Linux there’s a display that shows the amount of chunks of map (I think) being saved (like [1254/6874]), so it’s very easy to figure out what’s going on. It also seems to take far less time to save than on Windows, even on big maps.