I've got a Caller<> endpoint that is used to invoke remote jax-rs methods that return Response. However, the body of the RemoteCallback<Response> callback is not called.

...
// jax-rs interface method
  @POST
  @Path("/accept/{id:[0-9][0-9]*}")
  @Produces("application/json")
  public Response accept(@PathParam("id") Long id);
...

@RequestScoped
public class ResourceRequestEndpointImpl implements ResourceRequestEndpoint{
...
  @Inject @Edit
  protected Event<ResorceRequest> editEvt;

  @Override
  public Response accept(Long id) {
    ..
     editEvt.fire(...);
     return Response.ok().build();
  }
}


// client side code
endpoint.call(new RemoteCallback<Response>() {
    @Override
    public void callback(Response response) {
      log.info("back from acceptResource");  // not called  
    }
}, new RestErrorCallback() {
   @Override
   public boolean error(Request message, Throwable throwable){
       log.info(message + " :: " + throwable.getMessage());   // not called  
       return true;
    }
}).accept(model.getId());


@Override
public void onEdit(@Observes @Edit ResourceRequest updated) {
    // this code runs well ...
}