I have been away from AC2 code for a while, running Ardupirates code for several months without having any serious issues. Today I tried AC 2.0.46.
Everything seemed ok. I tested stabilize, alt hold, loiter and rtl. After a couple of batteries the quad suddenly flipped over and became uncontrollable. This happened while in loiter or RTL mode, don't remember exactly. It was 30m+ up in the air, so I had long enough time to switch to Stabilize, but the quad just flipped several times completely uncontrollable.
Unfortunatly I have no logs. I remember reading something about a person having the same problem in a earlier AC2 version. Is it still a problem in 2.0.46?