Web content comments subscriber recevices an email after update of the web content

• Type: Bug
• Status: Verified
• Resolution: Unresolved
• Affects Version/s: 7.0.X, 7.1.X, Master
• Fix Version/s: None
• Component/s: Collaboration > Comments
• Labels:
  • QA-V
  • ee-ts
• Story Points: 0.25
• Fix Priority: 3
• Git Pull Request: https://github.com/achaparro/liferay-portal/pull/250

Reproduction steps:

1. Create two admin users: user1 and user2
2. Login with user2
3. Create a new Basic Web Content and add it to the Welcome page
4. On the Web Content Display portlet, click on the top-right ellipsis (aka "the 3 vertical dots") > Configure > Content Metadata > Select > Comments
5. Checkpoint: a Subscribe to comments section should now appear onto the portlet
6. Click on "Subscribe to comments"
7. Login with user1
8. Edit the web content (for example, give a new title and content), then publish:

Actual behavior: An email notification is sent
Expected behavior: No email notifications should be sent, because user1 did not comment on the web content