OSDOCS#14939: Adding known issue for GitLab provider

Author: bergerhoffer

release_notes/ocp-4-20-release-notes.adoc

@@ -1781,8 +1781,9 @@ In the following tables, features are marked with the following statuses:
 [id="ocp-release-known-issues_{context}"]
 == Known issues
 
-
-
+// TODO: This needs to move to the z-stream that this gets released with
+* When using GitLab or Google as the external OIDC identity provider for direct authentication, clicking *Log out* from the {product-title} web console does not log you out of the console. (link:https://issues.redhat.com/browse/OCPBUGS-61649[OCPBUGS-61649])
+* When using Active Directory Federation Services for Windows Server as the external OIDC identity provider for direct authentication, logging into the {product-title} web console the first time produces an authentication error. As a workaround, reload the web console until it displays properly. (link:https://issues.redhat.com/browse/OCPBUGS-62142[OCPBUGS-62142])
 
 
 [id="ocp-telco-core-release-known-issues_{context}"]