Confluence is not triggering authentication prompt when site is opened to anonymous but the space is restricted

Issue Summary

• Confluence is not triggering authentication when site has SSO configured Confluence is opened to anonymous but the space is restricted.

Steps to Reproduce

1. Enable the Anonymous access on Confluence Global Settings.
2. Open a browser on incognito mode.
3. Try to access a space which is not opened to anonymous.

Expected Results

• Confluence should prompt you to authenticate or it should open the prompt login.

Actual Results

• We are receiving the message "You've stumbled on a restricted space."
   

  Workaround

  As a Workaround for now, customers can authenticate again on Confluence and then access the space which is not opened to anonymous.

On the error page, there's also a door icon on the top right to log in on Confluence.