Graceful Rancher OS shutdown in AWS

Hi. We are using the latest, official Rancher OS 1.1 image in AWS (ami-9515feed) and it seems like the OS never receives a shutdown/stop signal if a server is paused/terminated through the AWS console or within an Auto Scaling Group. As far as I can tell, a RancherOS stop in AWS is the equivalent of pulling the plug. Is that the expected behaviour, or is this a bug?