Planes not following waypoint when on ground. Holding since

Hey, I am trying to let my airplanes follow a waypoint when on the ground,
however they won’t move… When debugging, I see that the plane is holding, but
why? This is the code: <https://github.com/GewoonJaap/Flight-Simulator-Better-
Traffic/blob/ef6ab79c547b5be3f8c24a522a0337f81a2f7867/Util/LiveTrafficHandler.cs#L168>