Intermitent issues with the Nomad UI on dispatch job children summary in namespaces

[lgfa29]

Nomad version

Nomad v1.1.2 (60638a086ef9630e2a9ba1e237e8426192a44244)

Operating system and Environment details

MacOS

Issue

The Nomad UI displays a weird intermittent behaviour with dispatch job children summary.

Reproduction steps

1. Start a Nomad dev aget

   $ nomad agent -dev
   

2. Create a namespace

   $ nomad namespace apply dev
   

3. Run the reproduction parameterized batch job

   $ nomad run batch.nomad
   

4. Dispatch an instance of the parameterized job

   $ nomad job dispatch -namespace=dev batch
   

5. Open the Nomad UI, select the dev namespace, and navigate into the batch job
6. The dispatched child is missing from the list
7. Navigate back the job list, and repeat step 5
8. The dispatched child job appears, but hovering over the resource bar causes it shrink

Expected Result

Dispatch children display correctly in the table

Actual Result

Dispatch child sometimes don't appear. Other times the resource bar shrinks on hover.

Job file (if appropriate)

job "batch" {
  datacenters = ["dc1"]
  type        = "batch"
  namespace   = "dev"

  parameterized {
    meta_optional = ["sleep"]
  }

  meta {
    sleep = "10"
  }

  group "batch" {
    task "sleep" {
      driver = "docker"

      config {
        image   = "alpine:3.13"
        command = "/bin/ash"
        args    = ["${NOMAD_TASK_DIR}/sleep.sh"]
      }

      template {
        data = <<EOF
#!/usr/bin/env bash
echo "Sleeping for ${NOMAD_META_sleep}s"
sleep ${NOMAD_META_sleep}
echo "Done"
        EOF

        destination = "local/sleep.sh"
      }
    }
  }
}

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