Atlassian Update – 9 January 2018
I'd like to inform you that we will start introducing this change from 22 January 2018.
As a consequence, all jira:issue_* webhooks will no longer contain comment-related data and also jira:issue_updated webhook will be not sent for comment-related events.
We've recently made two improvements to comment_* webhooks:
We believe that with these enhancements, comment webhooks are a viable replacement to comment data in issue webhooks, and we highly recommend that you switch your apps to rely on comment webhooks before this change takes in effect.
Product Manager for Jira Cloud Ecosystem
This issue tracks the actual removal of comment object data in JIRA issue webhooks as described in the deprecation notice.
We will update this issue with an actual removal date when we have one.