Collision with everything but other instance of it

[AlexandreFleutelot]

Hello,

In my bevy application I spawn the folowing bundle:

commands.spawn((
TransformBundle::from(Transform::from_xyz(spawner_tf.translation.x, 275.0, 0.0)),
RigidBody::Dynamic,
Collider::capsule_y(10.0, 5.0),
KinematicCharacterController{
up: Vec2::Y,
offset: CharacterLength::Relative(0.01),
slide: true,
autostep: Some(CharacterAutostep {
max_height: CharacterLength::Relative(0.3),
min_width: CharacterLength::Relative(0.5),
include_dynamic_bodies: true,
}),
max_slope_climb_angle: 0.78, //45 deg
min_slope_slide_angle: 0.52, //30 deg
snap_to_ground: Some(CharacterLength::Relative(0.2)),
filter_groups: Some(CollisionGroups {
memberships: Group::GROUP_1,
filters: Group::ALL.difference(Group::GROUP_1)
}),
..default()
},
LockedAxes::ROTATION_LOCKED,
GravityScale(3.),
));

I would like these entities to collide with evething except other instance of it (i execute this spawn command multiple time). I have used the filter_group parameter of the kinematicCharacterController but it doesnt work.

How should I proceed to get this behavior?

Thanks,
Alex