There's no real urgency for me on this. I was just curious. I'll await the next version rather than forcing an install.
I am a CPAN tester. The process didn't get far enough for a report to be generated: that may have been due to cpan hanging (as I indicated in the issue). It may be that others hit the same problem but didn't raise an issue. I note that there are no entries at all in the "cygwin" column of "CPAN Testers Matrix: File-Replace 0.14 (latest distribution)".
Unless you have a Cygwin installation for testing, I'd be happy to help with that.
I'd suggest moving further discussion from this OT sub-thread to a new topic.