Tensorflow.Numpy.NDArray constructor abnormal?

[cross-hello]

Here are my code:

 static void Main(string[] args)
        {
            List<int> a =new List<int>{1,-1,-2,-3};
            Tensorflow.NumPy.NDArray aa=new Tensorflow.NumPy.NDArray(a.ToArray());// Point A
            Console.WriteLine("Hello World!");
            Console.Write("Hi");
        }

Point A will raise a error like this:

But if I use Tensorflow.NumPy.NDArray aa= (Tensorflow.NumPy.NDArray)a.ToArray(); in the position of Point A, the question solved.
Now I want to know if it is some of my error or others cause it happen.

[Oceania2018]

@cross-hello Can you try this sample?

[cross-hello]

OK
I try:

var x = Tensorflow.NumPy.np.array(1, 2, 3);
Tensorflow.NumPy.NDArray aa=new Tensorflow.NumPy.NDArray( x.ToArray<int>());

The code pass. Could you figure me why it happen?

[Oceania2018]

Fixed for next release.

[cross-hello]

Thank you~