Robb please let me know if you need help with this one, in case there is any backend work required.

Can you share the YAML of the ClusterVersion resource?

$ oc get clusterversion version -o yaml

We might need the cluster operator YAML as well.

$ oc get co -o yaml

apiVersion: config.openshift.io/v1
kind: ClusterVersion
metadata:
  creationTimestamp: "2021-04-23T00:58:57Z"
  generation: 1
  managedFields:
  - apiVersion: config.openshift.io/v1
    fieldsType: FieldsV1
    fieldsV1:
      f:spec:
        .: {}
        f:channel: {}
        f:clusterID: {}
    manager: cluster-bootstrap
    operation: Update
    time: "2021-04-23T00:58:57Z"
  - apiVersion: config.openshift.io/v1
    fieldsType: FieldsV1
    fieldsV1:
      f:status:
        .: {}
        f:availableUpdates: {}
        f:conditions: {}
        f:desired:
          .: {}
          f:channels: {}
          f:image: {}
          f:url: {}
          f:version: {}
        f:history: {}
        f:observedGeneration: {}
        f:versionHash: {}
    manager: cluster-version-operator
    operation: Update
    time: "2021-04-23T01:07:49Z"
  name: version
  resourceVersion: "231292"
  selfLink: /apis/config.openshift.io/v1/clusterversions/version
  uid: f97c4457-d6c7-48d0-ab12-b96243b33a57
spec:
  channel: stable-4.7
  clusterID: a3c88c93-6339-43ad-96ec-f534f2b21b70
status:
  availableUpdates:
  - channels:
    - candidate-4.7
    - candidate-4.8
    - fast-4.7
    - stable-4.7
    image: quay.io/openshift-release-dev/ocp-release@sha256:1cd01b7a64cd837cc5c2a4ef5d887b89ed2573c8956433b0b112720b75d1667b
    url: https://access.redhat.com/errata/RHBA-2021:1075
    version: 4.7.6
  - channels:
    - candidate-4.7
    - candidate-4.8
    - fast-4.7
    - stable-4.7
    image: quay.io/openshift-release-dev/ocp-release@sha256:4a1aa09138ec75a0b9d37671b2e2a7041c91f2aacf9a7e3723efbd24d71b19b6
    url: https://access.redhat.com/errata/RHBA-2021:1149
    version: 4.7.7
  - channels:
    - candidate-4.7
    - candidate-4.8
    - fast-4.7
    - stable-4.7
    image: quay.io/openshift-release-dev/ocp-release@sha256:1275ec59cc465729c9a18facaa471e013a4ad86a1bec5236b4169191922f7b5c
    url: https://access.redhat.com/errata/RHBA-2021:0821
    version: 4.7.3
  conditions:
  - lastTransitionTime: "2021-04-23T01:19:35Z"
    message: Done applying 4.7.2
    status: "True"
    type: Available
  - lastTransitionTime: "2021-04-23T01:19:35Z"
    status: "False"
    type: Failing
  - lastTransitionTime: "2021-04-23T01:19:35Z"
    message: Cluster version is 4.7.2
    status: "False"
    type: Progressing
  - lastTransitionTime: "2021-04-23T00:59:04Z"
    status: "True"
    type: RetrievedUpdates
  desired:
    channels:
    - candidate-4.7
    - candidate-4.8
    - fast-4.7
    - stable-4.7
    image: quay.io/openshift-release-dev/ocp-release@sha256:e32040d23234e21f1b4ecc500533934996708c91587497a17ded2b89b36f72b4
    url: https://access.redhat.com/errata/RHBA-2021:0749
    version: 4.7.2
  history:
  - completionTime: "2021-04-23T01:19:35Z"
    image: quay.io/openshift-release-dev/ocp-release@sha256:e32040d23234e21f1b4ecc500533934996708c91587497a17ded2b89b36f72b4
    startedTime: "2021-04-23T00:59:04Z"
    state: Completed
    verified: false
    version: 4.7.2
  observedGeneration: 1
  versionHash: 6U9spJguMMc=

Created attachment 1774826 [details]
co yaml file

Please disregard the attachment and clusterversion yaml. Cluster had been reloaded last night, will need to recreate the 4.8 cluster.

Christian, we're able to reproduce. We shouldn't need the ClusterVersion YAML any longer. Thank you, though.

Bug introduced with https://github.com/openshift/console/pull/8617

Created attachment 1774848 [details]
NEW co yaml file

Created attachment 1774849 [details]
clusterversion yaml file

Correct requested files now uploaded.

Reassigning to cvogt since the dev console team caused the bug.

Ran an upgrade to 4.8.0-0.nightly-s390x-2021-04-29-131457 - am doing some more checking but the console appears to be working again.

As per my comment above, is this issue considered fixed? Or is there more work to be done?

Yes, this is fixed, but awaiting QE validation.

The Console renders and logs in. I can navigate around without any issue. 

Verified on 4.8.0-0.nightly-2021-05-18-072155
Using Safari v14.0.3

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: OpenShift Container Platform 4.8.2 bug fix and security update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2021:2438