Why is there no login 
in my JIRA System Dashboard?
1. My JIRA version is data center and I just updated it from 10.0.1 to 10.3.1.
2. My service is servicedesk-10.3.1.
3. There was a login window in 10.0.1, but it disappeared after the update.
4. But I can still log in from the upper right corner.