Issue Summary

When a Pull Request (PR) is created, the PR Author and Reviewers added should be automatically set as PR Watchers / Followers. This will allow the Reviewer / Author to receive notifications on activities in the PR.

We have observed that intermittently, PR Author / Reviewers aren't added to PR Watchers list automatically. This leads to them not receiving notifications on PR Activity

Steps to Reproduce

Since this is intermittent, it may not be easy to reproduce.

1. Create a new Pull Request on a repository
   • Add Few Reviewers (Including Default Reviewers)
2. Click Create PR
3. As the PR Author or Reviewer
   • Navigate to the PR page click the "ellipsis" (...) at the top right.
   • See if it shows "Watch" or "Stop Watching".

Expected Results

It shows "Stop Watching" which indicates you are already watching the PR.

Actual Results

It shows "Watch" which means as a PR Author or Reviewer, you aren't automatically watching the PR.

Workaround

• The workaround as of now is to manually watch the PR after creation.