Adding a comment in a transition screen where transition does not send email does not send email for the IssueCommented event as well

Summary

If a transition (using generic event) is not configured to send email, however, a user adds a comment on the transition screen (IssueCommented event configured to send email), then the IssueCommented event does not send an email as well. JIRA doesn't generate IssueCommented event, so the user does not receive an email for this comment.

Steps to Reproduce

1. Configure a workflow transition with post function to fire Generic event.
2. Make sure to edit notification scheme so that Generic event does not send email
3. Make sure to edit notification scheme so that IssueCommented event sends email
4. Create an issue
5. Transition the issue and add a comment on the transition screen

Expected Results

Use should receive an email for the IssueCommented event

Actual Results

No email is received for this comment.

There is nothing written in the atlassian-jira-outgoing-mail.log

Notes

As a user, a comment added during a transition or on the view issues screen directly, is the same. They appear the same way on the issue. So, they should be treated the same way too.

Workaround

Currently there is no workaround for this.