Elasticsearch Kibana SSO Related Network Policy Errors

When networkPolicies are enabled for the Elasticsearch-Kibana package, SSO logins do not work as Elasticsearch seems to not be able to communicate with the OIDC Endpoints.

Log:

"message": "Authentication to realm baby-yoda failed - Failed to
 authenticate user with OpenID Connect (Caused by ElasticsearchSecurityException[Failed to exchange code for Id Token using the Token Endpoint.]; nested: SocketTimeoutException[5,000 milliseconds timeout on connection http-outgoing-2 [ACTIVE]];)"