The concurrency group only deduplicates live work on a branch; a run that was queued or still building kept its runner after the branch was deleted or its pull request closed. A delete and a pull_request closed trigger now cancel everything of that branch that has not completed, minus the cancelling run itself, which shares the head branch on a pull request event.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
