Activity is not visible if an announcement is marked as read

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.10 EE GA1, 6.2.X EE, 7.0.1 CE GA2
• Fix Version/s: 6.2.X EE, 7.0.1 CE GA2
• Component/s: Activities widget, ~ [Archived] Collaboration, ~ [Archived] Social Networking
• Labels: None
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Git Pull Request: https://github.com/johnnyhowey/liferay-plugins/pull/735

The issue and reproduction steps:
1. Deploy Social Office. Ensure that your user has the role "Social Office User".
2. Deploy a documents and media portlet on welcome page
3. Upload 4 documents with that portlet
4. Open your dashboard. There should be an announcements portlet and an activity portlet
5. You can see an activity "... uploaded 4 new documents" in the activity portlet
6. Create a new announcement
7. Mark this announcement as read
8. Reload the page
9. Problem: The activity is not visible anymore. If you mark the announcement as unread, the activity will be visible again.