[keycloak-user] Problem using Keycloak behind reverse proxy since 4.5.0.Final

I have keycloak in a bare metal kubernetes singe nod cluster. Its installed using helm. For https, we setup a reverse proxy in front of keycloak. First we use nginx with a lua extension for oidc, and moved on to envoy proxy. Results are the same - works until 4.4.0.Final. Everything is working well as long as we use keycloak versions up to 4.4.0. I have spent much time going over the reverse proxy setup in the documentation (which seems to have nothing new lately that should justify any changes since 4.4.0) and not made any progress. Can any one shed light on this darkness for us?