The jog speed reduction button on the touchscreen does not work.

When I use the mouse, the speed reduction button works fine
But when I use the touchpad, it doesn't work
I noticed that the touchpad doesn't work in the area I marked
I think if I make it bigger, it will solve my problem
Can anyone tell me how to fix this?
 

IMHO that bug has been fixed with a recent patch.
So using gmoccapy 3.4.9 should solve that.

Norbert

Can you explain how I can do this?
Many thanks