$ oc get route -n <project>

NAME                                HOST/PORT                               PATH                                 SERVICES                      PORT   TERMINATION     WILDCARD
cob-assistedonboarding-web-xxxxx    netbanking-<namespace>.apps.dev.ocp.ib   /AssistedOnboarding                  cob-assistedonboarding-web    http   edge/Redirect   None

$ oc annotate route --all -n <project> router.openshift.io/cookie-same-site="Lax"

route.route.openshift.io/cob-assistedonboarding-web-xxxxx annotated 

// Checking Route YAML after applying the annotation, the annotation was not applied, although the annotation was successfully applied:

apiVersion: v1
items:
- apiVersion: route.openshift.io/v1
  kind: Route
  metadata:
    creationTimestamp: "2023-10-03T19:40:26Z"
    labels:
      app.kubernetes.io/instance: sit-cob-assistedonboarding-web
      app.kubernetes.io/managed-by: Helm
      app.kubernetes.io/name: cob-assistedonboarding-web
      app.kubernetes.io/version: 1.0.0
      helm.sh/chart: cob-assistedonboarding-web-0.2.0
    name: cob-assistedonboarding-web-nz87g

//Create a sample project
$ oc project test

Now using project "test" on server "https://api.shrocp4upi413ovn.lab.upshift.rdu2.redhat.com:6443".

// Deploy a sample web application(httpd)
$ oc new-app --name=httpd --docker-image=registry.access.redhat.com/rhscl/httpd-24-rhel7

Flag --docker-image has been deprecated, Deprecated flag use --image
warning: Cannot find git. Ensure that it is installed and in your path. Git is required to work with git repositories.
--> Found container image 0629e8d (11 days old) from registry.access.redhat.com for "registry.access.redhat.com/rhscl/httpd-24-rhel7"

    Apache httpd 2.4 
    ---------------- 
    Apache httpd 2.4 available as container, is a powerful, efficient, and extensible web server. Apache supports a variety of features, many implemented as compiled modules which extend the core functionality. These can range from server-side programming language support to authentication schemes. Virtual hosting allows one Apache installation to serve many different Web sites.

    Tags: builder, httpd, httpd24

    * An image stream tag will be created as "httpd:latest" that will track this image

--> Creating resources ...
    imagestream.image.openshift.io "httpd" created
    deployment.apps "httpd" created
    service "httpd" created
--> Success
    Application is not exposed. You can expose services to the outside world by executing one or more of the commands below:
     'oc expose service/httpd' 
    Run 'oc status' to view your app.


$ oc get pods

NAME                                READY   STATUS              RESTARTS   AGE

httpd-56894bdc5b-6jq8s              1/1     Running             0          27s

$ oc get svc
NAME                     TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)             AGE

httpd                    ClusterIP   172.30.166.130   <none>        8080/TCP,8443/TCP   34s

// Create route
$ oc expose svc httpd
route.route.openshift.io/httpd exposed


$ oc get route
NAME    HOST/PORT                                                               PATH   SERVICES   PORT       TERMINATION   WILDCARD
httpd   httpd-test.apps.shrocp4upi413ovn.lab.upshift.rdu2.redhat.com          httpd      8080-tcp                 None

// Check the annotations present on the route
$ oc get route httpd -oyaml

apiVersion: route.openshift.io/v1
kind: Route
metadata:
  annotations:
    openshift.io/host.generated: "true"
  creationTimestamp: "2023-10-17T07:55:38Z"
  labels:

$ oc annotate route httpd router.openshift.io/cookie-same-site="Lax"

// Check if the annotation is applied successfully

$ oc get route httpd -oyaml
apiVersion: route.openshift.io/v1
kind: Route
metadata:
  annotations:
    openshift.io/host.generated: "true"
    router.openshift.io/cookie-same-site: Lax    -----------------------> annotation present 
  creationTimestamp: "2023-10-17T07:55:38Z"
  labels: 

4.11.13

Reproducible in customers environment

1.
2.
3.

The route annotation is not applied, although it shows that the route was annotated successfully.

The annotation should get applied successfully and the route should have the applied annotation.