Actor collides with ground, while being in a different group

In my simulation I:

  1. add the ground plane by gym.add_ground()
  2. create an actor by gym.create_actor(…, collision_group=1337, filter=0)

here from documentation

  • param5 (int) – collision group that actor will be part of. The actor will not collide with anything outside of the same collisionGroup
  • param6 (int) – bitwise filter for elements in the same collisionGroup to mask off collision

I would assume, that now my actor is not colliding with the ground, yet it does.