When a Horizontal Pod Autoscaler (HPA) is created with a ContainerResource metric, the data for the ContainerResource metric isn't visible in the Details page of the HPA. 

Tested in 4.18.13 but will affect later versions as well.

Always

    1. Create a new project with the command oc new-project test.
    2. Create a test HPA resource with a ContainerResource metric. Here's an example command to do this. 
        oc apply -f - <<EOF 
        apiVersion: autoscaling/v2
        kind: HorizontalPodAutoscaler
        metadata:
          name: test-hpa
          namespace: test
        spec:
          maxReplicas: 1
          metrics:
          - type: ContainerResource
            containerResource:
              name: cpu
              target:
                type: Utilization
                averageUtilization: 10
              container: test-container
          scaleTargetRef:
            apiVersion: apps/v1
            kind: Deployment
            name: test-deploy
        EOF    
    3. Login to the web console as a cluster-admin and go to 
       Administrator > Workloads > HorizontalPodAutoscalers > <HPA Name> and check under the "Metrics" section.      

In the Metrics table, the ContainerResource metric is shown as "ContainerResource (unrecognized type)" in the Type field with no information about the Current or Target usage.     

There is relevant information about the ContainerResource metric in the Type, Current, and Target fields of the Metrics table.