Teams desktop client is no longer rendering Adaptive Card colors for table elements

Hello,

Since the recent Teams update around October 20th, the Adaptive Card colors in my webhook-triggered Power Automate flows have stopped rendering correctly. The colors display as expected on iOS and in the Adaptive Card Designer, but not on the desktop or web versions of Teams. Please look at the example below.

Thank you

Desktop Client

Designer

Following is the JSON I am using: 

{
        "type":"message", 
        "attachments":[
            {  
                "contentType":"application/vnd.microsoft.card.adaptive",  
                "contentUrl":None,  
                "content":{  
                    "$schema":"http://adaptivecards.io/schemas/adaptive-card.json",  
                    "type":"AdaptiveCard",  
                    "version":"1.4",  
                    "msteams": {  
                        "width": "Full"  
                    },
                    "body": [
                        {
                            "type": "Table",
                            "gridStyle": "default",
                            "firstRowAsHeaders": True,
                            "showGridLines": "true",
                            "columns": [
                                {
                                    "width": 50
                                },
                                {
                                    "width": 25
                                },
                                {
                                    "width": 25
                                },
                                {
                                    "width": 25
                                },
                                {
                                    "width": 60
                                }
                            ],
                            "rows": [
                                {
                                    "type": "TableRow",
                                    "style": "accent",
                                    "cells": [
                                        {
                                        "type": "TableCell",
                                        "style": "good",
                                        "items": [
                                            {
                                            "type": "TextBlock",
                                            "text": "GREEN",
                                            "wrap": True,
                                            "weight": "Bolder"
                                            }
                                        ]
                                        },
                                        {
                                        "type": "TableCell",
                                        "style": "warning",
                                        "items": [
                                            {
                                            "type": "TextBlock",
                                            "text": "AMBER",
                                            "wrap": True,
                                            "weight": "Bolder"
                                            }
                                        ]
                                        },
                                        {
                                        "type": "TableCell",
                                        "style": "attention",
                                        "items": [
                                            {
                                            "type": "TextBlock",
                                            "text": "RED",
                                            "wrap": True,
                                            "weight": "Bolder"
                                            }
                                        ]
                                        },
                                        {
                                        "type": "TableCell",
                                        "style": "accent",
                                        "items": [
                                            {
                                            "type": "TextBlock",
                                            "text": "ACCENT",
                                            "wrap": True,
                                            "weight": "Bolder"
                                            }
                                        ]
                                        },
                                        {
                                        "type": "TableCell",
                                        "style": "default",
                                        "items": [
                                            {
                                            "type": "TextBlock",
                                            "text": "DEFAULT",
                                            "wrap": True,
                                            "weight": "Bolder"
                                            }
                                        ]
                                        }
                                    ]
                                }  
                            
                            ]
                        }
                        
                    ]
                }
            }
		]
	}