Azure AI Services CLU: Null Resolutions Block Returned for Quantity.Dimension Entity

Azure AI Services CLU (conversational language understanding) returns a null Resolutions block in results for the built-in Quantity.Dimension entity. This was working normally as of a week or two ago. Other built-in entities return the Resolutions block as expected. So far, it's just the Dimension entity that seems to be affected.

You can see the behavior directly in Azure AI Language Studio / Testing Deployments and examining the Result JSON. I've had the same model deployed and working properly for 9 months prior to this.

I tried training the same model again and deployed it as a new version to a Test endpoint with the same results.

I haven't seen the issue raised anywhere else yet.

Region: North Europe

Below is a sample Result output illustrating the issue with the Quantity.Dimension built-in entity. See 'category': 'dimension' below...

{
  "query": "show me the first 10 items within 20 km of gromo, italy last year\n\n\n",
  "prediction": {
    "topIntent": "Scrapbook.Find",
    "projectKind": "Conversation",
    "intents": [
      {
        "category": "Scrapbook.Find",
        "confidenceScore": 1
      },
      {
        "category": "Scrapbook.ShowAssets",
        "confidenceScore": 1.9243291e-9
      },
      {
        "category": "Scrapbook.Where",
        "confidenceScore": 1.2294839e-10
      },
      {
        "category": "Scrapbook.Reset",
        "confidenceScore": 8.733761e-11
      },
      {
        "category": "Scrapbook.Count",
        "confidenceScore": 8.1913414e-11
      },
      {
        "category": "Scrapbook.Welcome",
        "confidenceScore": 7.377301e-11
      },
      {
        "category": "Scrapbook.Navigate",
        "confidenceScore": 4.3238208e-11
      },
      {
        "category": "Scrapbook.DrillDown",
        "confidenceScore": 4.2078348e-11
      },
      {
        "category": "Scrapbook.Collection",
        "confidenceScore": 1.2524555e-11
      },
      {
        "category": "Scrapbook.Category",
        "confidenceScore": 4.101284e-12
      },
      {
        "category": "Scrapbook.Related",
        "confidenceScore": 3.3869298e-12
      },
      {
        "category": "None",
        "confidenceScore": 2.362469e-12
      },
      {
        "category": "Scrapbook.SelectItem",
        "confidenceScore": 1.6680388e-12
      },
      {
        "category": "Scrapbook.ShowDetails",
        "confidenceScore": 1.1624435e-12
      },
      {
        "category": "Scrapbook.Help",
        "confidenceScore": 6.251971e-13
      },
      {
        "category": "Scrapbook.Debug",
        "confidenceScore": 2.110486e-13
      },
      {
        "category": "Scrapbook.Goodbye",
        "confidenceScore": 1.6217763e-13
      }
    ],
    "entities": [
      {
        "category": "ordinal",
        "text": "first",
        "offset": 12,
        "length": 5,
        "confidenceScore": 1,
        "resolutions": [
          {
            "resolutionKind": "OrdinalResolution",
            "offset": "1",
            "relativeTo": "Start",
            "value": "1"
          }
        ],
        "extraInformation": [
          {
            "extraInformationKind": "EntitySubtype",
            "value": "quantity.ordinal",
            "tags": [
              {
                "name": "Ordinal",
                "confidenceScore": 0.6
              },
              {
                "name": "Numeric",
                "confidenceScore": 0.6
              }
            ]
          }
        ]
      },
      {
        "category": "l.param",
        "text": "first",
        "offset": 12,
        "length": 5,
        "confidenceScore": 1,
        "extraInformation": [
          {
            "extraInformationKind": "ListKey",
            "key": "earliest"
          }
        ]
      },
      {
        "category": "number",
        "text": "10",
        "offset": 18,
        "length": 2,
        "confidenceScore": 1,
        "resolutions": [
          {
            "resolutionKind": "NumberResolution",
            "numberKind": "Integer",
            "value": 10
          }
        ],
        "extraInformation": [
          {
            "extraInformationKind": "EntitySubtype",
            "value": "quantity.number",
            "tags": [
              {
                "name": "Number",
                "confidenceScore": 0.8
              },
              {
                "name": "Quantity",
                "confidenceScore": 0.8
              },
              {
                "name": "Numeric",
                "confidenceScore": 0.8
              }
            ]
          }
        ]
      },
      {
        "category": "l.category",
        "text": "items",
        "offset": 21,
        "length": 5,
        "confidenceScore": 1,
        "extraInformation": [
          {
            "extraInformationKind": "ListKey",
            "key": "any"
          }
        ]
      },
      {
        "category": "l.near",
        "text": "within",
        "offset": 27,
        "length": 6,
        "confidenceScore": 1,
        "extraInformation": [
          {
            "extraInformationKind": "ListKey",
            "key": "nearby"
          }
        ]
      },
      {
        "category": "number",
        "text": "20",
        "offset": 34,
        "length": 2,
        "confidenceScore": 1,
        "resolutions": [
          {
            "resolutionKind": "NumberResolution",
            "numberKind": "Integer",
            "value": 20
          }
        ],
        "extraInformation": [
          {
            "extraInformationKind": "EntitySubtype",
            "value": "quantity.number",
            "tags": [
              {
                "name": "Number",
                "confidenceScore": 0.8
              },
              {
                "name": "Quantity",
                "confidenceScore": 0.8
              },
              {
                "name": "Numeric",
                "confidenceScore": 0.8
              }
            ]
          }
        ]
      },
      {
        "category": "dimension",
        "text": "20 km",
        "offset": 34,
        "length": 5,
        "confidenceScore": 1
      },
      {
        "category": "geoLocation",
        "text": "gromo, italy",
        "offset": 43,
        "length": 12,
        "confidenceScore": 1,
        "extraInformation": [
          {
            "extraInformationKind": "EntitySubtype",
            "value": "geography.location",
            "tags": [
              {
                "name": "City",
                "confidenceScore": 1
              },
              {
                "name": "GPE",
                "confidenceScore": 1
              },
              {
                "name": "Location",
                "confidenceScore": 1
              }
            ]
          },
          {
            "extraInformationKind": "EntitySubtype",
            "value": "geography.location",
            "tags": [
              {
                "name": "CountryRegion",
                "confidenceScore": 0.99
              },
              {
                "name": "GPE",
                "confidenceScore": 0.99
              },
              {
                "name": "Location",
                "confidenceScore": 0.99
              }
            ]
          }
        ]
      },
      {
        "category": "dateTime",
        "text": "last year",
        "offset": 56,
        "length": 9,
        "confidenceScore": 1,
        "resolutions": [
          {
            "resolutionKind": "TemporalSpanResolution",
            "timex": "2024",
            "begin": "2024-01-01",
            "end": "2025-01-01"
          }
        ],
        "extraInformation": [
          {
            "extraInformationKind": "EntitySubtype",
            "value": "datetime.daterange",
            "tags": [
              {
                "name": "DateRange",
                "confidenceScore": 0.8
              },
              {
                "name": "DateTime",
                "confidenceScore": 0.8
              }
            ]
          }
        ]
      }
    ]
  }
}