In Blue Ocean, create a pipeline from a GitHub repo that contains this Jenkinsfile:

pipeline {

script {

node {

checkout scm

sh 'ls -l'

sh 'env'

}

}

}

It will fails to build, because it's invalid declarative structure.

Try to edit it in Blue Ocean.

Expected:

Editor shows, or error message shows

Actual:

White window shows

Browser console has Javascript error.