Cruising airspeed

Unfortunately, it is not possible to change Cruise airspeed (Lower right hand corner, under Airspeed m/s)

I have tried to install the latest beta release,, same issue

After downgrading to 1.3.41, can change again.

Seems like a bug???

Sorry for asking again. Is this a bug or am I doing something wrong?

I’m using the latest version of arduplane, 3.7.1 on an Octaquad plane.