Reproduce in DEV: 

• clear your work dir
• remove dependencies on editor in poms
• run up and install all default plugins
• open blue ocean
• install editor
• go back to blue ocean and open editor, look in console - will see a 404 due to an api not being loaded. 

Fairly easy to reproduce:

• docker run -p 8080:8080 jenkinsci/blueocean
• Install the Blue Ocean Pipeline Editor
• Navigate to http://localhost:8080/blue/pipelines/pipeline-editor-preview

Be greeted with JavaScript errors