The What's New section for Firmware V01.00.0340 has this entry - "Optimized shooting performance when flying forward in Sport mode. Adjust the flight attitude to avoid propellers unexpectedly showing up in the camera view."
In order to accomplish this I'm sure one or more of the flight characteristics was changed to make the
MA2 be less aggressive (angles of attack) when flying in Sport mode. Another fix in Sport mode not mentioned was the camera dropping from 0 deg to 15 deg when you go full stick forward from dead stop. Again the AOA for accelerating was decreased to accomplish this.