Pull Request Statuses - Added custom properties to a status aren't getting persisted by TFS - tfs

Question

We are operating a TFS 2018 Update 2 in our enviroment.
We are sending the example json found here to our server and it is getting accepted successfully:
{
"properties": {
"sampleId": 7,
"customInfo": "Custom status information",
"startedDateTime": {
"$type": "System.DateTime",
"$value": "2017-09-19T14:50:26.7410146Z"
},
"weight": {
"$type": "System.Double",
"$value": 1.75
},
"bytes": {
"$type": "System.Byte[]",
"$value": "dGhpcyBpcyBzYW1wbGUgYmFzZTY0IGVuY29kZWQgc3RyaW5n"
},
"globalId": {
"$type": "System.Guid",
"$value": "1e788cb9-9d3d-4dc6-ac05-822092d17f90"
}
},
"state": "succeeded",
"description": "Sample status succeeded",
"context": {
"name": "sample-status-1",
"genre": "vsts-samples"
},
"targetUrl": "http://fabrikam-fiber-inc.com/CI/builds/1"
}
But the response doesn't look like in the documentation. Instead it looks like this:
{
"id": 6,
"state": "succeeded",
"description": "Sample status succeeded",
"context": {
"name": "sample-status-1",
"genre": "vsts-samples"
},
"creationDate": "2019-12-11T16:14:05.0574648Z",
"updatedDate": "2019-12-11T16:14:05.0574648Z",
"createdBy": {
"displayName": "...",
"url": "https://.../_apis/Identities/0b85e078-130d-4cb8-a450-17c5c7efccec",
"_links": {
"avatar": {
"href": "https://.../_api/_common/identityImage?id=0b85e078-130d-4cb8-a450-17c5c7efccec"
}
},
"id": "0b85e078-130d-4cb8-a450-17c5c7efccec",
"uniqueName": "...",
"imageUrl": "https://.../_api/_common/identityImage?id=0b85e078-130d-4cb8-a450-17c5c7efccec"
},
"targetUrl": "http://fabrikam-fiber-inc.com/CI/builds/1",
"_links": {
"self": {
"href": "https://.../_apis/git/repositories/35fe73eb-7af1-4bba-bf04-545611fcac1d/pullRequests/58/statuses/6"
},
"repository": {
"href": "https://.../_apis/git/repositories/35fe73eb-7af1-4bba-bf04-545611fcac1d"
}
}
}
The properties are gone. What could be wrong?
Could it be a somehow completely missleading documentation?

Answer 1

To troubleshoot your issue, please check the following items:
Check whether the Status updated on the pull request after running the POST request.
Press F12 in your browser, and send the POST request to check the statuses to see whether you can get properties in the response body.
Check your TFS edition by going to Administration Console -- Application Tier, or checking the About on the web portal. The issue can not be reproduced in TFS 2018.2 on our side.