Regex is working in local machine. But in the production machine, it is not working

Question

Basically, I am trying to remove special character from xml file. I have tried the below code. I have tested with regex tester. It's working fine. In the production machine, it is replacing string.Empty for = character which is valid.

using System;
using System.Text.RegularExpressions;

class Program
{
    static void Main(string[] args)
    {
        string xmlString = "<root><name>John & = Doe</name></root>";

        // Replace special characters with their XML entities
        string cleanedXml = Regex.Replace(xmlString, @"[^\u09\u0A\u0D\u20-\uD7FF\uE000-\uFFFD\u10000-\u10FFFF]", 
                                       string.Empty);
    
        Console.WriteLine(cleanedXml);
    }

}

Culture : en-US in the prod machine.

Please anyone help me on this why it's happening. What's problem in the regex expression? Why regex is replacing equal symbol on prod machine alone? I am using. Net framework 4.8 version.