[Moo] event.stop is not working

[duclet]

So, I have attached an event on an li element and within the li, there
is an anchor element as well. When it is clicked, I have it do
something and called event.stop to prevent the default action of the
anchor tag to be triggered. It works the first time I click on it.
However, the second time I click on it, the event isn't stopped.