I want to use the Crowd2 plugin to allow for single sign-on (SSO) in Confluence, JIRA, Stash, Nexus, and Jenkins.

Unfortunately, I am observing the following buggy behavior:

• Using, for instance, JIRA to log in does not log in the user to Jenkins but to all other services. Instead, the user is redirected to Jenkins' log in form which again logs out the user from all services – see below.
  • Interestingly, using Jenkins to log in causes the user to be logged in to all other services.
• Jenkins automatically logs out users after a few minutes (cf., JENKINS-22774), the users are redirected to Jenkins' login form. This again causes the Crowd Session somehow to expire / to be destroyed (cf. above).
  • Thus, when using Jenkins with SSO, users have to log in every few minutes – in all services.