[Rendering] Adaptive card templating is not working with an array element

Target Platforms

Other

SDK Version

1.2.1 and 1.2.2

Application Name

Microsoft search

Problem Description

Expected behavior which works in Designer (using the js templating library):

Sample input:

Expected output:

Issue:
But the dot-net templating library is unable to parse the array element (ex: names) inside a string. It doesn't have any escape characters for the array element, causing an invalid JSON object to be outputted. This results in a rendering issue.

Screenshots

No response

Card JSON

Sample JSON:
{
    "type": "AdaptiveCard",
    "body": [
        {
            "type": "TextBlock",
            "size": "Medium",
            "weight": "Bolder",
            "text": "Names: ${names}"
        }
    ],
    "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
    "version": "1.5"
}

Sample data:
{
    "names": ["Name1", "Name2", "Name3"]
}

Sample Code Language

C#

Sample Code

string jsonTemplate = @"{
    ""type"": ""AdaptiveCard"",
    ""body"": [
        {
            ""type"": ""TextBlock"",
            ""size"": ""Medium"",
            ""weight"": ""Bolder"",
            ""text"": ""Names: ${names}""
        }
    ],
    ""$schema"": ""http://adaptivecards.io/schemas/adaptive-card.json"",
    ""version"": ""1.5""
}";

var data = @"{
    ""names"": [""Name1"", ""Name2"", ""Name3""]
}";

var jsonData = JObject.Parse(data);
           
 AdaptiveCardTemplate template = new AdaptiveCardTemplate(jsonTemplate);
 var result = template.Expand(jsonData);

Output result = "{\"type\":\"AdaptiveCard\",\"body\":[{\"type\":\"TextBlock\",\"size\":\"Medium\",\"weight\":\"Bolder\",\"text\":\"Names: [\"Name1\",\"Name2\",\"Name3\"]\"}],\"$schema\":\"http://adaptivecards.io/schemas/adaptive-card.json\",\"version\":\"1.5\"}"

JObject.Parse(result); // -> **Throws exception**

Start with the AdaptiveCardTemplate constructor and Expand call shown in the sample, then trace how the ${names} value is inserted into the TextBlock text. Reproduce the case with the supplied card and data, and verify that the expanded result remains valid JSON when parsed with JObject.Parse while preserving the array values.