Air exhaust vents only full close / full open

[Nikolaj Delaney]

see screenshots
Situation A: all systems NORM, PRESS page shows tiny partial opening of exhaust vents, but in reality they are full open outwards.

 

Situation B: Manually selected DITCHING - the vents cycle inwards and close. Below screenshot of how I think they should open in flight due to drag etc - the animation is there.

[Nikolaj Delaney]

At time 0:38 there is a very nice detail on how the vents are open inwards in the air, and later you can see that they only open outwards on the ground.