Hi Marshall, thanks for modifying it and testing it with the two different consoles. That looked promising. Also, after writing what I wrote about the sample code and my own code both not working, my next thought was that if the problem appears in two different programs written by two different people, then maybe the problem was in my mouse, and that I should try re-running it using a better/newer mouse. But since you reproduced the same problem on your academic computer that I was having, I'm thinking now that the mouse is not the problem.

But both of us are running Windows 10, and the Win32::Console module has been around for a lot longer than Windows 10 has. I wonder if it's a Windows 10 problem? An Internet search of Win32::Console reveals that other languages have versions of it as well. I wonder if they are encountering problems when running programs written in those other languages on Windows 10 machines? No way to pin that down since this is a Perl forum. I did notice that one discussion about this module on Perl in particular -- http://computer-programming-forum.com/53-perl/1fb16f663d489dbe.htm -- goes back to June of 1902, so maybe it is only a Windows 10 problem. But that date makes me even more impressed with the magnitude of what Larry has accomplished beyond just the brilliant design of Perl.