I have had everything from a Phantom 3 Pro to an Inspire and have never seen this. But I just got the Mavic 3 and when flying forward it ascends on its own. Even at 200+ feet and will hit the maximum altitude without in ascending yoke input. Is this because of the ability of the M3 to see further when in Bypass mode? Confused. Any idea. I have calibrated the controller and IMU but its raining here now and have not been able to test.