Thanks for the flowers everyone. Yes, acro mode may be a "new revival" for AQ. Someone needs to get Warthox to try it now... last time I saw him, he was asking why AQ is so boring to fly.
Heiko, are you taking off in full manual flight mode when this happens, or PH? Is it just landing which resets it back to north, or an disarm/arm? Are you using heading-free mode? I've never noticed this, so I will need some more details to recreate (as you can tell). Thanks.
Cheers,
-Max