Q_Tailsit_Input=0 the program reverses rudder direction after transition

Why does Q_Tailsit_input=0 reverse the rudder direction after transition?

Apparently it was programmed this way purposefully ?

When my tailsitter is in the quad (vertical) position, the rudder stick spins my plane correctly.
But when my tailsitter is in the plane (horizontal0 position, the rudder stick increases the speed to the wrong motor.

The strange thing is Q_Tailsit_input=1 works fine i.e. the rudder stick has the correct results in both plane and quad positions