Can't get CollisionGroups working with KinematicCharacterController

[mrtelecaster]

I'm trying to use the CollisionGroups component to filter out certain collisions from my character controller, however no matter how I set it the character controller always collides with all groups. Provided is my setup from a simplified example trying to track down the problem.

commands.spawn((
	TransformBundle::default(),
	Collider::capsule(
		Vec3::new(0.0, -CHARACTER_END_HEIGHT, 0.0),
		Vec3::new(0.0, CHARACTER_END_HEIGHT, 0.0),
		CHARACTER_RADIUS,
	),
	KinematicCharacterController::default(),
	RigidBody::KinematicVelocityBased,
	CollisionGroups::new(
		Group::from_bits(0).unwrap(),
		Group::from_bits(0).unwrap(),
	),
));

In the full example I have a few different groups and filters to test things out, but here I'm attempting to do a sanity check and have the character collide with nothing, with no groups and no bits set in the filter. However even with this setup, the characters collide with everything else in the world, other characters, static objects, and dynamic rigidbodies. I also noticed that the CollisionGroups component does work as expected and allow me to filter collisions between dynamic bodies and between dynamic bodies and static objects, but for some reason my KinematicCharacterControllers collide with everything always no matter how I have the membership or filters set.

I suspect that I'm just missing some component that's needed alongside KinematicCharacterController in order for filters to work, but I don't know what that component is.

[mrtelecaster]

Solved my own problem after discovering the filter_groups field on KinematicCharacterController. In order to get collisions filtering the way I expect, I needed to set the filter_groups field AND insert a CollisionGroups component using the same values. If I set filter_groups without the component, not only would it collide with everything but other fields such as apply_impulse_to_dynamic_bodies would stop working and no longer apply.

let filter = CollisionGroups::new(
	Group::from_bits(0).unwrap(),
	Group::from_bits(0).unwrap(),
);
commands.spawn((
	TransformBundle::default(),
	Collider::capsule(
		Vec3::new(0.0, -CHARACTER_END_HEIGHT, 0.0),
		Vec3::new(0.0, CHARACTER_END_HEIGHT, 0.0),
		CHARACTER_RADIUS,
	),
	KinematicCharacterController{
		filter_groups: Some(filter),
		..default()
	},
	RigidBody::KinematicVelocityBased,
	filter,
));