The status of subscribe option does not change in "Actions" menu when user subscribe the root category in MB

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE, 7.0.0 M3
• Fix Version/s: 6.2.2 CE GA3 , 6.2.X EE, 7.0.0 M1
• Component/s: Collaboration, Message Boards, Subscription Manager
• Labels:
  • liferay-fixpack-collaboration-15-6210
• Environment: Tomcat 7.0.42 + MySQL 5.5.29 Portal master GIT ID: ecaa9927babcef46554824e8cc4a1a0069f3df93.; Tomcat 7.0.42 + MySQL 5.5.29 Portal ee-6.2.x EE GIT ID: 96e91e4e086bc2d58954f4039f19a80a9e4ae927.
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Story Points: 5
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/15925

Steps to reproduce:

1. Start portal, login as test user.
2. Add MB portlet into page.
3. Subscribe the root category in Message Boards Home tab.
4. Press My Subscriptions tab, you can find the root category (called "Guest").
5. Press "Actions" button, and press the "subscribe".
6. Do step 5 again.

Expected result:
The option in "Action" menu should change between "subscribe" and "unsubscribe".

Actual result:
Options do not change.

Note:
You can find steps to reproduce.gif for more details.