bug with the display inside a subpatcher

Hi all !

I have a little bug with Javascript.
I want create objects in an existing subpatcher, but the display is very strange...
Try this:

Save this JS code in "test.js".

inlets = 1;
outlets = 2;
function test_bug()
{
    // find th patcher buggy
    tt=this.patcher.firstobject;
    while (tt)
    {
        if (tt.maxclass == "patcher")
        {
            if (tt.subpatcher(0).name == "buggy")
            {
                obj1 = tt.subpatcher(0);
            }
        }
        tt=tt.nextobject;
    }

    // create the object "receive~ buggy" inside the patcher "buggy"
    obj1.newdefault(20,20,"receive~","buggy");
}

function bang()
{        
    test_bug();
}

And make this patch:

Bang, and look inside the patcher buggy .... !
Close, and re-open this...

If I create the subpatcher in JS, I have no problem when I make object inside this.
The mistake seems to be that I create object in a "closed" subpatcher.