when using Bitbucket as the repository server, it seems that branch do not get removed.

What I did:

1. create a branch on Bitbucket (feature/XXXXX)
2. create a PR and check the box "Close feature/XXXXX after the pull request is merged"
3. Jenkins triggers a multibranch job on "feature/XXXXX"
4. merge the branch locally to "develop"
5. push "develop"
6. Jenkins triggers a multibranch job on "develop"
7. "feature/XXXXX" is not visible on Bitbucket anymore
8. I expect Jenkins to remove the job for "feature/XXXXX" --> this is not the case