I was using Unified Remote in a different context previously on Windows 10. So either the Fall Creator's update stripped them out or UR isn't using that library. Given there aren't any other threads complaining about broken keys, I'd be surprised. :)
I will try the other keyboards and see what happens. I also submitted a formal support request but I don't know how quick the devs are to respond. I'll let you know how the other keyboards work out.