Redirect to /admin/master/console/

Hello,
following situation (all URLs are with https):

  1. go to dd.apps.cluster.local (dd doest not exist → Service unavailable)
  2. open a second tab and go to: keycloak.apps.cluster.local
  3. refresh tab 1 → redirect to dd.apps.cluster.local/admin/master/console/

Openshift (okd4): 4.15.0-0.okd-2024-03-10-010116
Keycloak operator: 24.0.3 provided by Red Hat
Keyclaok instance config:

spec:
  db:
    database: keycloak
    host: keycloak-primary.keycloak.svc.cluster.local
    passwordSecret:
      key: password
      name: keycloak-db-secret
    usernameSecret:
      key: username
      name: keycloak-db-secret
    vendor: postgres
  hostname:
    hostname: keycloak.apps.cluster.local
  http:
    tlsSecret: router-certs
  ingress:
    className: openshift-default
  instances: 1

No additional changes / configuration in Keycloak.
I have no idea, why I am getting a redirect to /admin/master/console/. There is route to “dd” configured in Openshift. It happens with all URLs under the cluster *.apps.cluster.local.