Click events nested within click event handlers do not trigger the first time

[Chris Henderson]

In mobile Safari, click events within click handlers do not trigger on the first click.

Example code:
-------------
document.querySelector('.link-one').addEventListener('click', function () {
    document.querySelector('.link-two').click();
});

In Chrome (mobile and desktop) as well as in desktop Safari (8.0.6), clicking a link with a class of "link-one" will then trigger the programmatic click of a link with class "link-two". Mobile Safari, however, does not trigger the click until the ".link-one" element is clicked a second time.

[Radar WebKit Bug Importer]

<rdar://problem/21547470>

[Chris Dumez]

Tested on iOS 9 beta using:
http://jsfiddle.net/f0hdqww3/1/

I correctly see "link2 clicked" in the console after clicking link1.

[Lucas Forschler]

Mass move bugs into the DOM component.