Crowd SSO is incompatible with JIRA 3.12/Confluence 2.7 trusted application feature.

If you have:

1- A Crowd version prior to 1.2.2
2- You have Single Sign-On (SSO) activated.
3- JIRA and Confluence with Trusted Application support, and
3- You are not seeing any results when using macros that pull data from the other system (for example, the jiraissues macro).

Then you are most likely affected by this bug. Update to Crowd 1.2.2 to fix the problem.