I mostly use perldb through emacs which works great. I have run into a problem in Windows 10

When debugging TK scripts in Windows 7,
I could enter CTRL-C twice in the emacs debug buffer
and then I'd have to go out and touch the GUI which would bring back control to the debugger

The CTRL-C does not seem to get passed to the running script properly in Windows 10

I thought it was a global problem with perldb in Win10,
But when I start perldb from the command prompt, I can use CTRL-C

It only seems to be emacs that isn't able to send the CTRL-C to the running application
I have to shut down the gui app to get back to the debugger prompt

I'm wondering if any users have run into this and found a workaround