[TIMOB-18326] Windows: JSValue context issue

Javascript
var window = Ti.UI.createWindow();

var button = Ti.UI.createButton({
    top: 20,
    bottom: 20,
    width: 200,
    height: Ti.UI.SIZE
})

// Set the title
// This doesn't crash because the text 'BUTTON' belongs to the same
// context 'button' was created in
button.title = 'BUTTON';

button.addEventListener('click',
    function (e) {
        // This will cause a crash due to the context of 'CRASH!'
        // overwriting the context 'title' was created with
        // shouldn't we be retaining the original context?
        button.title = 'CRASH!';
    }
);

window.add(button);