OIDC login works on some Quay instances but not all

Solution In Progress - Updated -

Issue

Multiple replicas of Red Hat Quay are deployed in an OpenShift cluster. When OIDC login method is used, login works on some of those replicas, while others report a failed login with the error:

Could not decode OIDC token.

Environment

OpenShift 3.x or above, Red Hat Quay 3.0.x

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