Hello,
I am using this as an example that CAS flow does not support BACK button. That is not the real problem I am facing.
We have added a couple more screens in the login flow, such as requiring user to change password if it expires, setting up user when login to CAS for the first time. Our BACK button is broken right now. Spring Web Flow should support it by default.
I understand the double-submit problem, that is why there is POST-REDIRECT-GET pattern.
What is in CAS that it overrides Spring Web Flow default behavior and does not support Back button, and I will have to implement "Back" myself on every screen individually?
Yan