GameObject is not staying on position AR foundation worldspace

Question

I created a simple GameObject with AR GroundPlane and every time I call the function it creating a new GameObject on AR WorldSpace. The problem is when I create GameObject that visible on AR Camera and trying to move the AR Camera the GameObject is moving too. I want to stay the GameObject on where I assign it on AR worldspace. I've been searching about this problem but no luck.

private void createObject()
    {
        count++;
        GameObject gm = Instantiate(cube, placeMentPose.position, placeMentPose.rotation);
        gm.name = "cube" + count;
        gm.GetComponent<LeanPinchScale>().enabled = false;
        gm.GetComponent<LeanTwistRotateAxis>().enabled = false;
        gm.GetComponent<LeanDragTranslate>().enabled = false;
        gm.AddComponent<ARAnchor>();

        gm.transform.GetChild(0).name = gm.name;

        spawnObject.Add(gm.name, gm);
    }