e.preventDefault() does't work with Y.on

[xlnt-webdesign]

I read the "A Recipe for a YUI 3 Application" article and tried the loose coupling part with events beeing bound to a default function.

while listening to the widget it is possible to preventDefault.
But listening on Y.on the defaultFn is called before the function in Y.on.
That means, I can't prevent the default function.

Here is a fiddle:
http://jsfiddle.net/ju5LY/

hope I'm wrong and it isn't a bug, but my fault
Daniel

[xlnt-webdesign]

Here is a link to the docs:
http://yuilibrary.com/yui/docs/api/classes/YUI.html#method_on

excerpt:
Y.on() subscribers for DOM events or custom events published with a defaultFn can prevent the default behavior with e.preventDefault()

This is what i expected, but it doesn't work like that.