My buddy's air brake's were extended when stationary on the ground whenever he used the throttle trigger to brake.
Then strangely enough, whenever I pressed the airbrake trigger, he would see my airbrake deploy on the ground but I didn't see mine deploy
And even more strangely, whenever he pressed the airbrake trigger, we could both see his airbrakes deploying on the ground
Idk if this effects anything, but I had rudder pedals and he doesn't (could be some weird syncing issues)