I had some event code which failed in Opera and I have stripped it down to [this small testcase](http://jsbin.com/ulalim/edit#javascript,html,live). 

Basically the problem is that the event handler doesn't run in Opera if the third parameter of `addEventListener` is not set. The value in the testcase increments in both Firefox and Chrome when the *"useCapture not set"*-button is clicked, but not in Opera.

This (old) article indicates that Opera is different than webkit & gecko browsers:
<http://my.opera.com/hallvors/blog/2006/10/12/2006-10-12-event-capture-explained>. I'm not sure what to make out of it though. MDN says `useCapture` should default to `false`.

is the default `true` in Opera, is the parameter simply not optional, or what am I missing? What is the correct behaviour?