If you are stationary in an airplane or moving very slowly, using your nose up/down and bank left/right keys will not cause your airplanes control surfaces, control stick or the pilots hand animations to move.
As you gain speed, those animations scale in intensity relative to the planes speed until they are in full effect.
Expected behavior is that no matter if the plane is stationary or flying, the hands, stick and control surfaces will react to your input in their full capacity.
Control surfaces affected by the "Left/right pedal" work no matter the speed.
Dev branch build 1.03.111011
This has been "fixed" but now the player is unable to affect the control surfaces while the engine is off.
Regressions introduced in 116538 have been fixed in 123647, making this completely resolved.
Mass closing tickets marked as resolved more than 1 month ago.
If the issue is in fact not resolved, please create a new ticket referencing this one and ask for it to be re-opened.