After added/removed label from a namespace, one stats of "route_metrics_controller_routes_per_shard" in Observe >> Metrics page aren't correct

There were 4 ingress-controllers and totally 15 routes. On web console, try to query "route_metrics_controller_routes_per_shard" in Observe >> Metrics page. the stats for 3 ingress-controllers are 15, and it is 1 for the last ingress-controller

4.12.0-0.nightly-2022-10-23-154914

Create pods, services, ingress-controllers, routes, then check  "route_metrics_controller_routes_per_shard" on web console

1. get cluster's base domain
% oc get dnses.config/cluster -oyaml | grep -i domain
  baseDomain: shudi-412gcpop36.qe.gcp.devcluster.openshift.com

2. create 3 clusters
% oc -n openshift-ingress-operator get ingresscontroller
NAME         AGE
default      7h5m
extertest3   120m
internal1    120m
internal2    120m
% 

3. check the spec of the 4 ingress-controllres
a, default

b, extertest3
spec:
  domain: extertest3.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
  endpointPublishingStrategy:
    loadBalancer:
      dnsManagementPolicy: Managed
      scope: External
    type: LoadBalancerService
c, internal1
spec:
  domain: internal1.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
  endpointPublishingStrategy:
    loadBalancer:
      dnsManagementPolicy: Managed
      scope: Internal
    type: LoadBalancerService
d, internal2
spec:
  domain: internal2.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
  endpointPublishingStrategy:
    loadBalancer:
      dnsManagementPolicy: Managed
      scope: Internal
    type: LoadBalancerService
  routeSelector:
    matchLabels:
      shard: alpha

4. check the route, there are 15 routes
% oc get route -A | awk '{print $3}'
HOST/PORT
oauth-openshift.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
console-openshift-console.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
downloads-openshift-console.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
canary-openshift-ingress-canary.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
alertmanager-main-openshift-monitoring.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
prometheus-k8s-openshift-monitoring.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
prometheus-k8s-federate-openshift-monitoring.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
thanos-querier-openshift-monitoring.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
edge1-test.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
int1reen2-test.internal1.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
pass1-test.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
reen1-test.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
service-unsecure-test.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
int1edge2-test.internal1.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
test.shudi.com
%

% oc get route -A | awk '{print $3}' | grep apps.shudi
oauth-openshift.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
console-openshift-console.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
downloads-openshift-console.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
canary-openshift-ingress-canary.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
alertmanager-main-openshift-monitoring.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
prometheus-k8s-openshift-monitoring.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
prometheus-k8s-federate-openshift-monitoring.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
thanos-querier-openshift-monitoring.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
edge1-test.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
pass1-test.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
reen1-test.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
service-unsecure-test.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com
%

% oc get route -A | awk '{print $3}' | grep apps.shudi | wc -l
      12
% oc get route -A | awk '{print $3}' | grep internal1 | wc -l 
       2
% oc get route -A | awk '{print $3}' | grep shudi.com | wc -l
       1
%

5. only route unsvc5 had the shard=alpha label
 % oc get route unsvc5  -oyaml | grep labels: -A2
  labels:
    name: unsvc5
    shard: alpha
 % oc get route unsvc5 -oyaml | grep spec: -A1
  spec:
    host: test.shudi.com

6. login web console(https://https://console-openshift-console.apps.shudi-412gcpop36.qe.gcp.devcluster.openshift.com/monitoring/query-browser), then navigate to Observe >> Metrics 

7. input"route_metrics_controller_routes_per_shard ", then click the "Run queries" button. As the attached picture showed:
​​name                           value
default                        15
extertest3                     15
internal1                      15      
internal2                      1

8. Also there was a minor issue: As the attached picture showed, there were two name in the header line

Name                                           name      value                              
route_metrics_controller_routes_per_shard     default    15
route_metrics_controller_routes_per_shard     extertest3 15
route_metrics_controller_routes_per_shard     internal1  15
route_metrics_controller_routes_per_shard     internal2  1

​​name                         value 
default                      15
extertest3                   15 
internal1                    15
internal2                    1

​​name                         value
default                      12
extertest3                   0
internal1                    2 
internal2                    1