App Registration get for specific apps with exhaustive=true doesn't provide versions

[corneil]

Description:
Register timestamp-task 2.0.2 and 3.0.0

curl -s "http://localhost:9393/apps/task/timestamp?exhaustive=true" | jq .
Output is

{
  "name": "timestamp",
  "type": "task",
  "uri": "docker:springcloudtask/timestamp-task:2.0.2",
  "version": "2.0.2",
  "defaultVersion": true,
  "bootVersion": "2",
  "versions": null,
  "label": null,
  "options": [],
  "shortDescription": null,
  "inboundPortNames": [],
  "outboundPortNames": [],
  "optionGroups": {}
}

A list of versions is expected.