Example code showing case for in break bug in unity3d JS

#pragma strict

function Start () {

    var a=1;

    switch (a)
    {

        case 1:
            // works as expected
            for (var b=5; b>0; b--)
            {
                Debug.Log(b);
                if (b == 2) {
                    break;
                }
            }
            Debug.Log("Boom");
        break;

        case 2:
            // fails to detonate!
            var ts : int[] = [5,4,3,2,1,0];
            for (var t in ts)
            {
                Debug.Log(t);
                if (t == 2) {
                    break;
                }
            }
            Debug.Log("Boom");
        break;

    }

}