Mentions (<at> Tags) Doesn't Work in Nested Elements Like TableCell in Adaptive Cards

Question

I am creating a table in my Adaptive Card and want to tag people inside the cells. However, this doesn't seem to be possible. If I use the mention in a top-level TextBlock, it works though. Could you please help me with this issue?

My Adaptive Card looks like this:

card = {
    "type": "message",
    "attachments": [
        {
            "contentType": "application/vnd.microsoft.card.adaptive",
            "content": {
                "type": "AdaptiveCard",
                "version": "1.4",
                "width": "stretch",
                "body": [
                    {
                        "type": "TextBlock",
                        "text": "This is my table",
                    },
                    {
                        "type": "Table",
                        "columns": [
                            {
                                "type": "TableColumn",
                                "width": "stretch"
                            },
                            {
                                "type": "TableColumn",
                                "width": "stretch"
                            }
                        ],
                        "rows": [
                            {
                                "type": "TableRow",
                                "cells": [
                                    {
                                        "type": "TableCell",
                                        "items": [
                                            {
                                                "type": "TextBlock",
                                                "text": "",
                                            }
                                        ]
                                    },
                                    {
                                        "type": "TableCell",
                                        "items": [
                                            {
                                                "type": "TextBlock",
                                                "text": "Col 2",
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "type": "TableRow",
                                "cells": [
                                    {
                                        "type": "TableCell",
                                        "items": [
                                            {
                                                "type": "TextBlock",
                                                "text": "Row 1",
                                            }
                                        ]
                                    },
                                    {
                                        "type": "TableCell",
                                        "items": [
                                            {
                                                "type": "TextBlock",
                                                "text": "<at>Miles GOLD</at>",
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ],
                "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
                "msteams": { 
                    "width": "full",
                    "entities": [
                        {
                            "type": "mention",
                            "text": "<at>Miles GOLD</at>",
                            "mentioned": {
                                "id": "miles.gold@gmail.com",
                                "name": "Miles GOLD"
                            }
                        }
                    ]
                }
            }
        }
    ]
}

Answer 1

Hello @Selim SARIALTIN,
Currently, Adaptive Cards do not support the mention feature within table cells.
For information regarding Adaptive Card mentions, you can refer to this:
https://learn.microsoft.com/en-us/microsoftteams/platform/task-modules-and-cards/cards/cards-format?tabs=adaptive-md%2Cdesktop%2Cdesktop1%2Cdesktop2%2Cconnector-html#mention-support-within-adaptive-cards

Thank you for your suggestion! To better achieve your requirements, we recommend submitting this feature request through the Teams Feedback Portal. This is the best way to ensure your idea is considered for future updates. 

We appreciate your input and encourage you to share any additional thoughts!