From https://github.com/jenkinsci/liquibase-runner-plugin/issues/10

Even if we set the Restrict where this project can be run to our slave, it still runs on master. Which is a problem because firewall rules prevent Jenkins master from accessing Postgres master but not the Jenkins Slave. Also we don't want that load on the master. This is the only plugin we have that does this. I even upgraded to 1.2.1 in hopes that might fix it.

Is this a bug or by design and can it be fixed?