Trying to set up a trigger collider, but the collision won't trigger

Hey, I'm really new at SwiftUI. I'm trying to set up a trigger collider with this code to later go on the fingertip.

private var sphereEntity = Entity()
    private var sphereCollisionEntity = Entity()
    let sphereRadius: Float = 0.2
    
    func setupContentEntity() -> Entity {
        return sphereEntity
    }

func addSphere() -> Entity {
        let sphere = ModelEntity(
            mesh: .generateSphere(radius: sphereRadius),
            materials: [SimpleMaterial(color: .yellow, isMetallic: true)]
        )
        
        // Set up the collision shape.
        let collision = CollisionComponent(
            shapes: [.generateSphere(radius: sphereRadius)],
            mode: .trigger, 
            filter: .default
        )
        
        // Set the physics body and make it kinematic.
        let physicsBody = PhysicsBodyComponent(shapes: [ShapeResource.generateSphere(radius: sphereRadius)], mass: 0.0, mode: .kinematic)
        
        sphere.name = "FingerTip"
        sphere.components.set(InputTargetComponent(allowedInputTypes: .all))
        sphere.components.set(collision)
        sphere.components.set(physicsBody)
        
        sphereEntity.addChild(sphere)
        
        return sphere
    }

I'm dragging the sphere around with a DragGesture(). I'm instantiating and subscribing these in a RealityView()

var body: some View {
        RealityView() {content in
            content.add(fingerModel.setupContentEntity())
            mainSphere = fingerModel.addSphere()
            
            colliderSphere = fingerModel.addCollisionSphere()
            mainSphere.addChild(colliderSphere)
            
            //collision detection
            subscription = content.subscribe(to: CollisionEvents.Updated.self, on: mainSphere) {
                collisionEvent in
                print("Collision started between \(collisionEvent.entityA.name) and \(collisionEvent.entityB.name)")
            }
         }
        .gesture(sphereDragGesture())
    }

But when I drag this into another collider, nothing happens. What's odd is that when I set this as dynamic and just let it drop onto the other collider the collision detection works fine.

I'm running this in the visionOS simulator.

I honestly can't see anything wrong with this. It seems like such a simple thing that should just work lol