Our campus has a working CAS 2 environment. For most of our web applications, if the user clicks Login and CAS detects that they already have a valid CAS token, they're logged directly into the web app without having to present credentials again.
But Moodle 2.6 isn't quite working that way. We have the CAS Server SSO plugin installed and configured normally. When users click to log in to Moodle, they're forced to present credentials to CAS even if they are already logged in to another CAS app. We are not able to figure out why Moodle is behaving differently from other web apps.
To be clear, users CAN log into Moodle via CAS - that part is working fine. It's just that they shouldn't be prompted to enter CAS credentials if they're already authorized through another web app.
What might we be missing? Thanks for any pointers.