Issue:

When you have a shell step with either returnStdout or returnStatus being "true", the step does not show a preview like when those are not set to "true".

Steps to Reproduce:

Create a simple pipeline with the following definition:

node('master'){
 sh 'echo "hello"'
 sh returnStdout: true, script: 'echo "hello"'
 sh returnStatus: true, script: 'echo "hello"'
}

And run the pipeline. Then look at it in Blue Ocean view and see that the first one has a description but the others do not.