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Possible @mentions bug in Microsoft Teams

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.




  "type": "message",
  "attachments": [
      "contentType": "application/",
      "contentUrl": null,
      "content": {
        "$schema": "",
        "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": "",
                "name": "Alejandro Marco"
              "type": "mention",
              "text": "\u003cat\u003eSergei Iakovlev\u003c/at\u003e",
              "mentioned": {
                "id": "",
                "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,




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