After a period of time, no Liferay user can log in. This only happens in our production environment.
Thank you for your report. I tried to reproduce this issue on Liferay Portal 6.0.12 but could not. Please ensure you have a fresh environment with no other issues that may interfere with the bug. If you still experience this issue, please let me know how to reproduce the issue and we can re-visit it. If I cannot reproduce this issue, it cannot be fixed. Thanks!
Closing this issue out for being inactive. Thanks Drew for checking in on this issue.