User is unable to edit a poll expiration date

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.0 CE M4
• Fix Version/s: 6.1.X EE, 6.2.0 CE M6
• Component/s: Legacy, Legacy > Control Panel menu, Polls, Social Networking
• Labels:
  • 6.1_release_notes
  • QA-F
  • liferay-fixpack-portal-52-6130
• Environment: Tomcat 7 + MySQL 5. Portal 6.2.x GIT ID: c61b0ce0190c5534611e8f3fcd38b6a352fb969e.
• Branch Version/s:
  6.1.x
• Backported to Branch:
  Committed
• Story Points: 3
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/11672

Steps to reproduce:
1. Navigate to Control Panel > Polls > Add Question
2. Enter in "Test Poll" in the Title, Polls Question and Choices fields > Save
3. Click Actions for "Test Poll" > Edit
4. Unflag Never Expire checkbox and change the expiration date

You will notice that when you try to change the expiration date it becomes grayed out (See attachment)

5. Click Save

You will notice that you get an exception in the console and the error message "Polls is temporarily unavailable." (See attachment)

The error is very inconsistent but it does occur. I'm unable to narrow down the exact reason why sometimes it happens and sometimes it does not.