Enrollment flows with Petitioner Enrollment Authorization set to Authenticated User fail immediately after registry/co_petitions/selectEnrollee/. A trace of the isAuthorized() function in the CoPetitionsController.php shows permissions being calculated as

(
[add] => 1
[delete] =>
[dupe] =>
[edit] =>
[match_policy] => N
[match] =>
[index] =>
[search] =>
[resend] =>
[view] =>
[viewEA] =>
[start] => 1
[selectOrgIdentity] =>
[selectOrgIdentityAuthenticate] =>
[selectOrgIdentityClaim] =>
[selectEnrollee] =>
[petitionerAttributes] =>
[sendConfirmation] =>
[waitForConfirmation] =>
[processConfirmation] =>
[collectIdentifier] =>
[checkEligibility] =>
[sendApproverNotification] =>
[waitForApproval] =>
[approve] =>
[deny] =>
[sendApprovalNotification] =>
[finalize] =>
[provision] =>
[redirectOnConfirm] =>
)

Further both petitionerToken and $this->parseToken() are showing empty/null strings.