In addition most of the instructors are used to fly helicopters with counter clockwise turning main rotors. The G2 is clockwise. Furthermore the fenestron has a different characteristic compared to a classic tail rotor. It's not linear but needs more pedal input for high power situations. The next factor is the moment provided by the tail fin itself. Slowing down you get to a point where the tail fin "stalls". At that moment you will need a big pedal input all of a sudden. That might even be more pronounced when turning into a left crosswind.
All these effects are common for all fenestron helicopters - they are not Cabri specific. Combined with the unusual direction due to the CW rotating rotor on the G2 it might be a surprise when you are not used to it.
I don't think it is a problem for a training heli, though. I learned on a Cabri and later transitioned to the EC135 and never had any problem with yaw control.