I'm missing: - the status details of the ingress object - must-gather link If not provided within 7 days, I'm going to close this BZ.
First tried to upgrade 4.8 env to 4.9 env, then customized the oauth route, but can't reproduce the issue. The bug described that customized oauth route after upgraded 4.9 env met the issue. Based on my test, I believe solely customizing the oauth route after upgrade 4.9 can't reproduce it.
Checked the must-gather, it shows that not only oauth route was customized but also the ingress.config domain and the openshift-ingress-operator/operator.openshift.io/ingresscontrollers/default.yaml ingress default cert were also customized. So, to reproduce it, it seems the reporter needs to clarify more background about what other things were done on the cluster.
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 4.10.3 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-2022:0056