"Login Unsuccessful" after configuring attribute release for https://issues.shibboleth.net/shibboleth

[Peter Schober]

* Borja, Matt <Matt.Borja at yc.edu> [2019-10-04 18:02]:
> We're trying to report a new issue with the recent upgrade to IdP
> 3.4.6 but are having some issues trying to use our IdP to login to
> https://issues.shibboleth.net/.

What's shown here /after/ a login attempt?
https://issues.shibboleth.net/jira/Shibboleth.sso/Session

-peter