When Pipelines creates a promotion branch and copies a PR that was opened in Bitbucket, it does not copy the reviewers. This means reviewers have no way in the Bitbucket UI to filter for PRs that they're assigned to review.

Further, since all the cloned PRs are authored by the Pipeline owner, the lack of reviewers on top of that makes it quite difficult to visually differentiate between the list of open PRs, especially if you're both someone who creates & reviews PRs.