Imagestreams references are showing IPs instead of "docker-registry.default.svc" in OpenShift

Issue

Imagestreams resolve to the internal registry IP, rather than the hostname on s2i builds after upgrading the cluster. Example:

$ oc describe is app-example
Name:                             app-example
Namespace:                        app-namespace
[...]
Tags:                                      1

1.0
  tagged from app-namespace/buildah-base@sha256:8b4e78a88359d8b477e6d946bba34b655a562a10fe9c89a096f873fa2f6d36b1

  * 172.30.1.100:5000/app-namespace/buildah-base@sha256:cf97cfc9d2c9bb4f9da5785a35692a8e0818fe1c43018981dcec909dbe2b42bb
      About a minute ago