Success ...
I just watched Ashhar's video showing how to use CW mode, where he shows using the keyboard to send a CW message.? Obviously, his didn't crash.
What was different?
Ashhar's desktop taskbar was "hidden".? So, I have just tried mine in CW mode with the taskbar hidden, and the "sBitx" program functions normally when pressing the [KBD OFF] button !!
Strange behavior, but it works none the less.? I will leave it to the "coders" to work out why, as I am no coder.
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Pete VK3PYE