Keyboard Shortcuts: Ctrl key not recognized

Hello all! I’m running Performer 3 build 3653.

Not sure when this first happened to me but I noticed a while back that keyboard shortcuts using the Ctrl key stopped working. Ctrl-C, Ctrl-V, Ctrl-S, etc.

I tried re-mapping the keys and Ctrl just isn’t recognized. As a work-around I now have these shortcuts re-mapped to use the Shift key instead.

I tried restoring the defaults to no avail, and I can confirm that Ctrl-C and Ctrl-V are working in Word and my web browser so it appears to be a specific issue with Cantabile.

Any idea what I can do to get this straightened out? Am I alone?