Gave a look into quite some forums/questions already but the answers were never able to solve my issue. Adaptive cards worked perfectly well with the old webhooks but I just can't figure out what I'm doing wrong when using workflow.

I've set up a presumably working workflow which parses the json received from a webhook request and then sends the adaptive card into a teams channel. The adaptive card is correctly being displayed in the desktop version, but the mobile version only displays the title.

I've tried changing the "type" to "message" instead of "AdaptiveCard", but using the type "message" doesn't even render anything on the mobile version, it just shows that a user has sent something but without any content. Changing the "version" property also doesn't affect anything.

Desktop:

Mobile:

My adaptive card json looks like this:

{
    "type": "AdaptiveCard",
    "$schema": ".json",
    "version": "1.4",
    "msteams": {  
        "width": "Full"  
    },  
    "body": [{
        "type": "TextBlock",
        "text": "Uptime Monitor",
        "wrap": true,
        "fontType": "Monospace",
        "size": "ExtraLarge",
        "weight": "Bolder",
        "color": "Attention",
        "style": "heading"
    }, {
        "type": "Table",
        "columns": [{
            "width": "auto"
        }, {
            "width": "auto"
        }, {
            "width": "auto"
        }],
        "rows": [{
            "type": "TableRow",
            "cells": [{
                "type": "TableCell",
                "items": [{
                    "type": "TextBlock",
                    "text": "URI",
                    "wrap": true,
                    "fontType": "Monospace",
                    "color": "Default"
                }],
                "style": "warning"
            }, {
                "type": "TableCell",
                "items": [{
                    "type": "TextBlock",
                    "text": "Down since",
                    "wrap": true,
                    "fontType": "Monospace",
                    "color": "default"
                }],
                "style": "warning"
            }, {
                "type": "TableCell",
                "items": [{
                    "type": "TextBlock",
                    "text": "Downtime (mins)",
                    "wrap": true,
                    "fontType": "Monospace",
                    "color": "default"
                }],
                "style": "warning"
            }],
            "style": "warning"
        }, {
            "type": "TableRow",
            "cells": [{
                "type": "TableCell",
                "items": [{
                    "type": "TextBlock",
                    "text": ";,
                    "wrap": true,
                    "horizontalAlignment": "Left",
                    "spacing": "None",
                    "fontType": "Monospace",
                    "size": "Medium",
                    "color": "Attention",
                    "isSubtle": false
                }],
                "style": "attention"
            }, {
                "type": "TableCell",
                "items": [{
                    "type": "TextBlock",
                    "text": "24.01.2025 10:39:19",
                    "wrap": true,
                    "fontType": "Monospace",
                    "color": "Attention"
                }],
                "style": "attention"
            }, {
                "type": "TableCell",
                "items": [{
                    "type": "TextBlock",
                    "text": "5",
                    "wrap": true,
                    "fontType": "Monospace",
                    "color": "Attention"
                }],
                "style": "attention"
            }]
        }]
    }]
}

In case needed, this is the schema I generated using "Use sample payload to generate schema" within power automate:

{
    "type": "object",
    "properties": {
        "type": {
            "type": "string"
        },
        "$schema": {
            "type": "string"
        },
        "version": {
            "type": "string"
        },
        "msteams": {
            "type": "object",
            "properties": {
                "width": {
                    "type": "string"
                }
            }
        },
        "body": {
            "type": "array",
            "items": {
                "type": "object",
                "properties": {
                    "type": {
                        "type": "string"
                    },
                    "text": {
                        "type": "string"
                    },
                    "wrap": {
                        "type": "boolean"
                    },
                    "fontType": {
                        "type": "string"
                    },
                    "size": {
                        "type": "string"
                    },
                    "weight": {
                        "type": "string"
                    },
                    "color": {
                        "type": "string"
                    },
                    "style": {
                        "type": "string"
                    },
                    "columns": {
                        "type": "array",
                        "items": {
                            "type": "object",
                            "properties": {
                                "width": {
                                    "type": "string"
                                }
                            },
                            "required": [
                                "width"
                            ]
                        }
                    },
                    "rows": {
                        "type": "array",
                        "items": {
                            "type": "object",
                            "properties": {
                                "type": {
                                    "type": "string"
                                },
                                "cells": {
                                    "type": "array",
                                    "items": {
                                        "type": "object",
                                        "properties": {
                                            "type": {
                                                "type": "string"
                                            },
                                            "items": {
                                                "type": "array",
                                                "items": {
                                                    "type": "object",
                                                    "properties": {
                                                        "type": {
                                                            "type": "string"
                                                        },
                                                        "text": {
                                                            "type": "string"
                                                        },
                                                        "wrap": {
                                                            "type": "boolean"
                                                        },
                                                        "fontType": {
                                                            "type": "string"
                                                        },
                                                        "color": {
                                                            "type": "string"
                                                        }
                                                    },
                                                    "required": [
                                                        "type",
                                                        "text",
                                                        "wrap",
                                                        "fontType",
                                                        "color"
                                                    ]
                                                }
                                            },
                                            "style": {
                                                "type": "string"
                                            }
                                        },
                                        "required": [
                                            "type",
                                            "items",
                                            "style"
                                        ]
                                    }
                                },
                                "style": {
                                    "type": "string"
                                }
                            },
                            "required": [
                                "type",
                                "cells"
                            ]
                        }
                    }
                },
                "required": [
                    "type"
                ]
            }
        }
    }
}