today I had the chance to test the new APM 3.0.3 version with the Autotune feature. The first flight was in Manual mode to calibrate the airspeed sensor. The second flight was started in manual mode and switched after achiving a good altitude I switch to AUTOTUNE mode. Immediately after switching to AUTOTUNE mode the plane starts to to sink (see pitch on the attached image). Fortunatly I could recover the plane. I tried 2 or three times again with the same behavior.
Here is my plane setup:
FPV Raptor 2m Wings
PX4 FMU + PX4IO
external compass + GPS
The plane flights in manual mode very well and in the past I had it als manual tuned and flew also in AUTO mode.
Can someone take a look to the logs whether there is something wrong.