Issue Summary

In case the options ‘Settings > Platform > Security > Disable Manual Sign In' is set to YES, and the customer is using SSO, in certain scenarios when the session expires, the user is not redirected to the login page, instead, when performing a 'Save', he will receive an 'Internal Error'.
Below you can see the behavior on scenarios when the session expired/was invalidated, and the settings are YES/NO:

Disable Manual Sign In	Video
NO	sso_manual_sign_in_off.mov
YES	sso_manual_sign_in_on.mov

Steps to Reproduce

One way to reproduce this consistently, but not the only one is

1. Have an SSO configured on JA
2. Have the settings Disable Manual Sign In' is set to YES
3. Log into JA
4. Go to the Theme grid
5. Open one Theme (or any other work item)
6. Duplicate the tab
7. On the second tab, hit User > Log Out
8. On the first tab, hit save on the Theme
9. See the red banner

Expected Results

If the session is no longer valid, the user will be redirected to the login screen

Actual Results

The user receives a red banner and continues to be on Jira Align

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available