Issue with dynamic typeahead search in adaptive cards

Target Application

Microsoft Teams

Application Operating System

Windows

Schema Version

1.5

Problem Description

There is an issue with dynamic typeahead search in adaptive cards for Teams. We get validation errors when we search any data from the dataset.

Example :

In this example, the validation property I have used is isRequired. So, when I set this property to true, select data from dropdown and click on Submit it gives me validation error.

Expected Outcome

It should not give validation error when data is selected from dropdown. Below is the expected outcome:

Actual Outcome

It is giving validation error when data is selected from dropdown.

Card JSON

{
  "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
  "type": "AdaptiveCard",
  "version": "1.3",
  "body": [
    {
      "type": "ColumnSet",
      "columns": [
        {
          "width": "stretch",
          "items": [
            {
              "choices": [],
              "choices.data": {
                "type": "Data.Query",
                "dataset": "city",
                "top": 20
              },
              "errorMessage": "City is required",
              "id": "city",
              "isMultiSelect": false,
              "isRequired": true,
              "label": "City",
              "style": "filtered",
              "type": "Input.ChoiceSet",
              "value": ""
            }
          ],
          "type": "Column"
        }
      ]
    },
    {
      "type": "ActionSet",
      "actions": [
        {
          "type": "Action.Submit",
          "title": "Submit"
        }
      ]
    }
  ]
}

Repro Steps

No response

Start by reproducing the provided Adaptive Card JSON in Microsoft Teams on Windows with schema version 1.5, using the dynamic typeahead dataset and required field validation. Trace why selecting a dropdown result still triggers the "City is required" error; done means the selected city submits without a validation error.