Reply to Both Scratch Buttons kill Jogwheels - on purpose?

Is this normal?

I have the 1.4FW arcade modded version. I was experimenting with whether or not I prefer to use the outer plastic rim for tempo nudging or turning off Scratch Mode entirely and using the whole platter when I stumbled upon this: Pressing both Scratch buttons while lit green disables the jog wheels entirely. The Scratch buttons stay lit green but the jog wheels' LEDs go dark. When I press them both again the jog wheels' LEDs come back on and everything works again.

Anyone else experienced this? Is there any reason why I would want to disable the jog wheels entirely while mixing?