Customers running 3.13 and below who use the OIDC plugin with `tls_client_auth_ssl_verify` unset would have seen this value change to `false` if they updated the config after the rollback of new defaults following the 3.14 release.
The rollback incorrectly flipped the oidc plugin tls_client_auth_ssl_verify to false as a default, which was not one of the items recently switched to default true and has instead been defaulted true for some time.
We have rolled out a fix to prod to change this default back to true. Updates to the OIDC plugin should once again keep this value set to true if not specifically defined.