Steps to reproduce:

1. Create a new freestyle job

• Add a string parameter: WORK_FOLDER
• Select "Execute concurrent builds if necessary"
• Under "Advanced Project Options", select "Use custom workspace", and input ${WORK_FOLDER}
• Build action: Invoke Maven 3 "mvn clean verify..."
• Post-build action: "Publish cucumber test result"

2. Execute the job twice (simultaneously) with different parameters:

• WORK_FOLDER=foo
• WORK_FOLDER=bar

Expected behavior:

• The two jobs run in parallel and complete independently, using their separate workspaces

Actual behavior:
One job will wait for the other job to complete. The jobs are dependent on each other in their post-build step.

One job will hang at the step until the second job finishes:

[Cucumber Tests] parsing cucumber.json