GrafCalc ignores some keys on the numberpad (XT keyboard, 16-bit build)

[sneakernets]

Using the latest 16-bit build as of the date of the error report.

When typing in some number values into GrafCalc, I noticed that the "9" key on the number pad does not work. I have to use the other "9" key in the qwerty area. I'm using an 83-key XT keyboard on a Turbo XT machine.