VM post build action is not performed when initiating Safe Restart https://wiki.jenkins-ci.org/display/JENKINS/SafeRestart+Plugin.

I've configured the plugin to suspend VM after it has finished executing jobs. With Safe Restart initiated, Jenkins waits for all running jobs to end and, once they're finished, restarts. Jenkins waits for jobs running on cloud slaves (VMs), disconnects and removes the slave, but the suspend action is not performed. As the result, those VMs keep running.