Multiple close notifications for the same issue

Summary

Multiple close notifications in activity stream for the same issue

Steps to reproduce

• Have an open issue in a gitlab project
• Create three consecutive commits
  • closes #issue_number
  • revert closes #issue_number
  • closes #issue_number
• Push to gitlab

Example Project

https://gitlab.com/tleilax/bug-example-multiple-close-notifications-for-issue/activity

What is the current bug behavior?

The activity stream states that the issue has been closed three times.

What is the expected correct behavior?

Only one notification should be sent.

Output of checks

This bug happens on GitLab.com