F Lock on RC-28

On our local VK5 2m SSB net last Friday I noticed I went off frequency during an over. Seems the cable on my mouse was rubbing against the scroll wheel on my RC-28 and changing the frequency even though F-Lock was on. Is there a way to ensure input from the RC-28 scroll wheel is blocked while F-Lock is on. It would be good to retain control over the Transmit and Function buttons.
I mentioned this in the 1.64 usage questions. It would be good to if this could be included in the next version of 2.xx.