Typo fixed

It wasn't the side of the issue that you referred to, but I do believe this is another side of the same mechanic. I'll do some more testing and then decide if this is worth doing in another ticket.

This is also probably related to an issue with the standard model where if you land and turn the engine off (then releasing collective), the collective will raise (and cause the aircraft to slip/fly) EVEN when the engine is audibly close to being completely off.

You can of course hold the collective down when the engine is shut, but that shouldn't be necessary as you cannot raise the collective that high with that low engine power.

This issue is easily reproduced with the MH-9, and here's a short demonstration: https://www.youtube.com/watch?v=q6acUs0aOtE&feature=youtu.be

The engine shutdown should restrict the collective much more.

Also, this is probably due to the collective lag from 0% (collective down) to 50% (no key pressed, "neutral") lagging.