What is wrong with swap?

    public class RealLogger
    {
        public int id;

        public RealLogger()
            : this(-1)
        {
        }

        public RealLogger(int id)
        {
            this.id = id;
        }
    }

        [TestMethod]
        [Isolated]
        public void FutureInstance_VerifyMethodWasCalledAndStubbed()
        {
            var fake = Isolate.Fake.Instance<RealLogger>();
            Isolate.Swap.NextInstance<RealLogger>().With(fake);
            var real = new RealLogger(77);
            Trace.TraceInformation("1: fake.id={0}, real.id={1}", fake.id, real.id);
            Isolate.CleanUp();

            fake = Isolate.Fake.Instance<RealLogger>();
            Isolate.Swap.NextInstance<RealLogger>().With(fake);
            fake.id = 8;
            real = new RealLogger(77);
            Trace.TraceInformation("2: fake.id={0}, real.id={1}", fake.id, real.id);
            Isolate.CleanUp();


            fake = Isolate.Fake.Instance<RealLogger>(Members.CallOriginal);
            Isolate.Swap.NextInstance<RealLogger>().With(fake);
            real = new RealLogger(77);
            Trace.TraceInformation("3: fake.id={0}, real.id={1}", fake.id, real.id);
            Isolate.CleanUp();

            fake = Isolate.Fake.Instance<RealLogger>(Members.CallOriginal);
            Isolate.Swap.NextInstance<RealLogger>().With(fake);
            fake.id = 8;
            real = new RealLogger(77);
            Trace.TraceInformation("4: fake.id={0}, real.id={1}", fake.id, real.id);
            Isolate.CleanUp();

            fake = Isolate.Fake.Instance<RealLogger>(Members.CallOriginal, ConstructorWillBe.Called, 3);
            Isolate.Swap.NextInstance<RealLogger>().With(fake);
            real = new RealLogger(77);
            Trace.TraceInformation("5: fake.id={0}, real.id={1}", fake.id, real.id);
            Isolate.CleanUp();

            fake = Isolate.Fake.Instance<RealLogger>(Members.CallOriginal, ConstructorWillBe.Called, 3);
            Isolate.Swap.NextInstance<RealLogger>().With(fake);
            fake.id = 8;
            real = new RealLogger(77);
            Trace.TraceInformation("6: fake.id={0}, real.id={1}", fake.id, real.id);
            Isolate.CleanUp();
        }

QTAgent32.exe Information: 0 : 1: fake.id=0, real.id=0
QTAgent32.exe Information: 0 : 2: fake.id=8, real.id=0
QTAgent32.exe Information: 0 : 3: fake.id=-1, real.id=77
QTAgent32.exe Information: 0 : 4: fake.id=8, real.id=77
QTAgent32.exe Information: 0 : 5: fake.id=3, real.id=77
QTAgent32.exe Information: 0 : 6: fake.id=8, real.id=77