Could pull request trigger transition more than one issue?

[Scott McCaskill]

I have a trigger on a workflow transition from one issue status to another. However, one of our developers noticed that when someone else made a pull request on a different issue feature branch, several of his issues' statuses were automatically transitioned as well. Is that expected functionality? How would I prevent that?

[Andy Heinzer]

It depends on the Jira issue key found in the title/comment of the pull request.   Jira will only transition issues that match the issue key in the pull request.   It is possible though that if the pull request mentions more than one Jira issue key that this could in turn transition multiple issues.

The behavior is explained a bit more in Configuring workflow triggers.