ingress-nginx: Ingress with app-root and force-ssl-redirect is not redirecting to HTTPS

Is this a BUG REPORT or FEATURE REQUEST? (choose one): BUG REPORT

NGINX Ingress controller version: 0.19.0

Kubernetes version (use kubectl version): Server Version: v1.10.5

Environment:

• Cloud provider or hardware configuration: AWS
• OS (e.g. from /etc/os-release): Debian GNU/Linux 8 (jessie)
• Kernel (e.g. uname -a): 4.4.121-k8s
• Install tools: kops

What happened: The ingress controller is set up with TLS termination at the ELB. The Ingress is set with with app-root and force-ssl-redirect. The request is not redirecting to HTTPS correctly.

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: kibana-ingress
  namespace: monitoring
  annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/app-root: "/_plugin/kibana"
    nginx.ingress.kubernetes.io/force-ssl-redirect: "true"
spec:
  rules:
  - host: foo.example.com
    http:
      paths:
      - path: /
        backend:
          serviceName: elasticsearch
          servicePort: 80

$ curl -I -k https://foo.example.com/
HTTP/1.1 302 Moved Temporarily
Content-Length: 161
Content-Type: text/html
Date: Fri, 12 Oct 2018 18:45:25 GMT
Location: http://foo.example.com/_plugin/kibana
Server: nginx/1.15.3
Connection: keep-alive

What you expected to happen:

I expect the redirect to target HTTPS.