Backlog List not populating when installed in TFS 2017 Update 3.1

[JaDevGuy]

Is this extension supported on TFS 2017 Update 3.1? After installing it the backlog dropdown is not being populated.

[louisfischer]

@JaDevGuy We are currently on TFS 2017 Update 3.1 and also are having the same issue. It use to work but now it does not. Attached is a screenshot of the issue. I hope that helps.

[shayki5]

Also in our TFS 2017.3 the widget does not show any data (after configure).
This errors on the console:
TypeError: Cannot read property 'EnableAppInsightTelemetry' of undefined
POST http://tfs:8080/tfs/Collection/TP/TP%20Team/_apis/wit/wiql 400 (Bad Request)
TypeError: Cannot read property 'templateName' of undefined
ccess to Script at 'http://tfs:8080/tfs/_apis/public/gallery/publisher/ms-devlabs/extension/RollUpBoard/2.0.35/assetbyname/lib/ldclient.min.js' from origin 'null' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'null' is therefore not allowed access.

[peckhamm]

I noticed that when using Internet Explorer I'm not seeing any data. But when I use Chrome, there is a slight delay (about 5 seconds) and then the data shows up. Hope that might add some value.

[louisfischer]

So it looks like when using the On-Premise version of TFS (Azure DevOps Server), the extension is looking for the [System.Area] in the post to the "_apis/wit/wiql' endpoint.

The below image is just using the Wiql Editor.

We recently started using the Team instead of Area according to the ms docs instructions here. Once i changed the WIsql to look for Team, the query succeeded.

So the question is, can the extension be modified to use another different field or allow for customization of the WSQL query?