Converter loses focus when enter key pressed.

[BrassEm]

I am running the interface settings on the converter for X-PID. The XPID Com is selected and highlighted in blue. When I key in a value into "Test one interface output pin" - "Value" %, if I click on the button below "Set output" all works well. When I key in a value and hit the enter key on the keyboard the converter windows loses focus and fails to respond after that. Only by closing and restarting the converter does it start working again. (As long as I don't hit the "Enter" key on the keyboard all is good.) It is repeatable.