[TIMOB-3109] Blur & MODAL_PRESENTATION_FORMSHEET == Keyboard not hiding.

I've found out that when a textField is on a modal window, with a modalStyle set to the constant of Titanium.UI.iPhone.MODAL_PRESENTATION_FORMSHEET the keyboard is not able to loose focus properly.

What happens when blur() is called is cursor focus is lost from the textField yet the keyboard remains on the screen and is unresponsive to touch events. I have written a small app.js so that this bug can be reproduced.

Running Titanium Developer v1.2.2 on OSX 10.6.6 and Titanium SDK v1.5.1 on an iPad Project (simulator and device). I'm 99.9% sure it's this line
"modalStyle: Titanium.UI.iPhone.MODAL_PRESENTATION_FORMSHEET" as removing it fixes the problem.

var window = Titanium.UI.createWindow({
    backgroundColor: '#eee'
});

var textField = Titanium.UI.createTextField({
    height:35,
    top:300,
    width:350,
    borderStyle:Titanium.UI.INPUT_BORDERSTYLE_ROUNDED
});

textField.addEventListener('return', function(e) {
    textField.blur();
});

window.add(textField);
window.open({
    modal:true,
    modalTransitionStyle: Titanium.UI.iPhone.MODAL_TRANSITION_STYLE_FLIP_HORIZONTAL,
    modalStyle: Titanium.UI.iPhone.MODAL_PRESENTATION_FORMSHEET
});