AppDomain switch bug in Mono

using System;
using System.Runtime.InteropServices;
using System.Diagnostics;

class Program
{
    [DllImport("test.dll")]
    static extern void WireCallback(Action func); // This saves the func in unmanaged space.
    [DllImport("test.dll")]
    static extern void DoCallback(); // This calls the saved func.

    static Action callback;

    static void Main()
    {
        callback = () => { };
        WireCallback(callback);

        AppDomain ad = AppDomain.CreateDomain("foo");
        ad.DoCallBack(new CrossAppDomainDelegate(OtherDomainTest));
    }

    static void OtherDomainTest()
    {
        int appDomainId = AppDomain.CurrentDomain.Id;
        DoCallback();
        Console.WriteLine("appDomainId == AppDomain.CurrentDomain.Id = {0}", appDomainId == AppDomain.CurrentDomain.Id);
        Debug.Assert(appDomainId == AppDomain.CurrentDomain.Id);
    }
}