Version Used: SDK 8.0.201, VS Version 17.10.0 Preview 2.0 [34626.289.main]

Steps to Reproduce:

using System.Text.RegularExpressions;

public static partial class Program
{
    public static void Main()
    {
        Console.ReadLine();
    }

    [GeneratedRegex(@".*", RegexOptions.Compiled)]
    public static partial Regex TestRegex();
}

Start debugging, change the @".*" string to something else and click Hot reload.

Expected Behavior: Works or at least doesn't show "unexpected error".

Actual Behavior: