Possible @mentions bug in Microsoft Teams

[se0ga]

Hey Community, 

I was sending information through incoming webhook to Microsoft Teams and noticed that when I mention two members of a team(one of them exist and one of them doesn't) mention will overwrite first one and assign to them wrong name.

Message:

{
  "type": "message",
  "attachments": [
    {
      "contentType": "application/vnd.microsoft.card.adaptive",
      "contentUrl": null,
      "content": {
        "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
        "type": "AdaptiveCard",
        "version": "1.2",
        "body": [
          {
            "type": "TextBlock",
            "text": "💬 \u003cat\u003eAlejandro Marco\u003c/at\u003e, \u003cat\u003eSergei Iakovlev\u003c/at\u003e for some reason it mentions me twice ",
            "wrap": true
          }
        ],
        "msteams": {
          "entities": [
            {
              "type": "mention",
              "text": "\u003cat\u003eAlejandro Marco\u003c/at\u003e",
              "mentioned": {
                "id": "alejandro.marco@taxiforemail.com",
                "name": "Alejandro Marco"
              }
            },
            {
              "type": "mention",
              "text": "\u003cat\u003eSergei Iakovlev\u003c/at\u003e",
              "mentioned": {
                "id": "sergei.iakovlev@taxiforemail365.onmicrosoft.com",
                "name": "Sergei Iakovlev"
              }
            }
          ]
        }
      }
    }
  ]
}

This is how it looks like in MS Teams:

If i change the order of mentions it works as expected.

Could you please help me to raise it with Microsoft Teams team somehow?

Thank you,

Sergei