Steps to reproduce:
- Start a fresh Jenkins 2.32.3
- Install latest BO 1.0.0-b24
- Create a Pipeline (even empty)
- Click on the configure cogwheel
It seems like it incorrectly prepends the root URL with /jenkins (reminds me of a similar issue like 6 months ago, going to search for it)
Jenkins is indeed running on http://localhost:8080 and clicking on the wheel leads to http://localhost:8081/jenkins/job/pipeline/configure
Can provide more details and/or a screencast if you cannot reproduce for whatever reason.