This issue has been affecting the map since 1.14.
I bought this map ages ago, and recently decided to downlaod it to see if the issue had been patched, but it has not. All NPCs on this map that I bought off of the marketplace... Gotta make that clear, didn't get this from MCPEDL or anything... have had their entire upper bodies removed. They're all just a pair of legs. Given the ratings this map has, I'd believe that reports have been made before, but they haven't.
This is quite aggravating, as, again, I spent money on this map, and wanted to enjoy it, but never got the chance to do so properly.
Screenshot of the issue provided, of course.