Authentication with the Jenkins plug in work well, however I am unable to use SSO. Expected behavior:

1. Log in at https://crowd.mydomain.com
2. Go to https://jenkins.mydomain.com
3. Get logged in.

Actual behavior:
3. Displays login screen.

FWIW, SSO works well between JIRA and Crowd. I am not seeing any lines on this misbehavior on neither Crowd or Jenkins log files. Inspecting the HTTP request it appears that the crowd token cookie is sent to Jenkins, and the name (default) is configured correctly in the plugin's configuration.

Let me know if additional information is needed.