Android Custom Events don't seem to bubble

I am having issues with custom events bubbling on a view in Android. Here is an example.

Button.js

function CreateButton(){
 
    var view = Ti.UI.createView({
        width: 100,
        height: 50,
        bubbleParent: true,
        top: 0
    });
 
    setTimeout(function(){view.fireEvent("hey");},1000);
 
    return view;
}       
 
module.exports = CreateButton;

var Button = require("Button");
 
var newButton = new Button();
 
newButton.addEventListener("hey", function(e){Ti.API.info("Ciao");});

Is there a difference in the propagation? I can't seem to find anything in the docs.

Thanks