Adaptive Card Invoke Action.Submit invalid payload from iOS Teams v4.16.0

[JMVCyber]

Describe the bug An adaptive card with a button Action.Submit results in an invalid payload which causes the Python botframework to crash when attempting to de-serialize.

To Reproduce Steps to reproduce the behavior:

1. Create an adapative card with an Action.Submit with the following payload:

                       {
                           "type": "Action.Submit",
                           "title": "Edit",
                           "data": {
                               "msteams": {
                                   "type": "task/fetch"
                               },
                               "action": "GetInfo",
                               "info_id": ${id}
                           }
                       }

2. On iOS with Teams v4.16.0 click the button
3. Observe that the payload received by the bot includes a key value pair: "tabContext": ""
4. The python BotFramework SDK - botbuildercore v4.14.2 will then fail attempting to tread the empty string value from tabContext as a dictionary.
5. Stacktrace: File "/usr/local/lib/python3.9/site-packages/msrest/serialization.py", line 1418, in _deserialize found_value = key_extractor(attr, attr_desc, data) File "/usr/local/lib/python3.9/site-packages/msrest/serialization.py", line 1162, in rest_key_extractor return working_data.get(key) AttributeError: 'str' object has no attribute 'get'

Expected behavior Teams on iOS should not send the empty tabContext element to have the same behaviour as desktop and Android clients.

Smartphone:

• Device: iPhone 12
• OS: iOS 15.7
• Browser n/a
• Version Teams App used - version 4.16.0

Additional context Full payload that causes de-serialization exception:

{
  "name": "task/fetch",
  "type": "invoke",
  "timestamp": "2022-09-12T16:30:42.382Z",
  "localTimestamp": "2022-09-12T18:30:42.382+02:00",
  "id": "redacted",
  "channelId": "msteams",
  "serviceUrl": "https://smba.trafficmanager.net/uk/",
  "from": {
    "id": "redacted",
    "name": "redacted",
    "aadObjectId": "redacted"
  },
  "conversation": {
    "conversationType": "personal",
    "tenantId": "redacted",
    "id": "redacted"
  },
  "recipient": {
    "id": "redacted",
    "name": "redacted"
  },
  "entities": [
    {
      "locale": "en-US",
      "country": "GB",
      "platform": "iOS",
      "timezone": "Europe/Brussels",
      "type": "clientInfo"
    }
  ],
  "channelData": {
    "tenant": {
      "id": "redacted"
    },
    "source": {
      "name": "compose"
    },
    "legacy": {
      "replyToId": "redacted"
    }
  },
  "replyToId": "redacted",
  "value": {
    "context": {
      "theme": "default"
    },
    "data": {
      "info_id": "636",
      "type": "task/fetch",
      "action": "GetInfo"
    },
    "tabContext": ""
  },
  "locale": "en-US",
  "localTimezone": "Europe/Brussels"
}

[JMVCyber]

Wrong repo