When the multi-job job executes the job it calls gets stuck at Pending - Description.
This seemed to be related to JENKINS-47792 but the workaround listed there had no impact.
It is also worth noting that when I Abort the multi-job the sub-job will then begin to run so it does seem to be some lock from multi-job.
I am creating an issue here in case it is an issue in Multi-Job.
Multi-job is useless to me until this is fixed, wherever the issue is.
I do not get any additional info in the system logs nor the job logs.