MapKit Not Updating MapContentBuilder after each mapCameraKeyframeAnimator keyframe

Hello Apple support,

I have this following code

Map(position: $mCam, selection: $lastSelection) {
   // Display content conditionally based on camera scope.    
   // ^^^ works with user gesture, does not work with mapCameraKeyframeAnimator
}
.onMapCameraChange(frequency: .continuous , { context in
   // save the camera scope
})
.mapCameraKeyframeAnimator(trigger: self.trigger, keyframes: { camera in
   // frames
})

Context:

• when logging, the .onMapCameraChange is updating. The content mapContentBuilder is running. But the content is NOT showing up on the map.
• MapCircle, MapPolyline does not show! however, Marker works just fine

Question:

• Anyone know How to indicate to MapKit Map view to draw the content?
• Or how to have a slight "break" between animation keyframes, so map can catch up.