[Rendering] [WinUI3] Columns not are not vertically stretched in WinUI3

[Diegorro98]

Target Platforms

Other

SDK Version

Unknown, but probably latest released

Application Name

Widgets board (With new WinUI3 Adaptive Cards)

Problem Description

When using a ColumnSet with an specified minHeigh columns elements doesn't use all the space available. This behavior differs from other platforms such NodeJS.

Screenshots

This is how the card is rendered in the designer:

This is how the card is rendered in the widget board:

Card JSON

{
    "type": "AdaptiveCard",
    "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
    "version": "1.6",
    "body": [
        {
            "type": "ColumnSet",
            "minHeight": "50px",
            "columns": [
                {
                    "type": "Column",
                    "width": "stretch",
                    "backgroundImage": {
                        "url": "data:image/svg+xml;utf8,<svg xmlns=\"http://www.w3.org/2000/svg\"><rect width=\"100%\" height=\"100%\"/></svg>"
                    },
                    "items": [
                        {
                            "type": "TextBlock",
                            "text": "TextBlock",
                            "wrap": true,
                            "color": "Light"
                        }
                    ]
                }
            ]
        }
    ]
}

Sample Code Language

No response

Sample Code

No response