On-tap sends event twice on touch device

[andiron]

All fine on desktop, this happens on touch devices only:
http://jsfiddle.net/6dgjcfd7/1/

I tested it using Nexus 5 and a touchepad and you can see that events tap, down, up are received twice, touchstart, click etc. work fine. It looks to me it came with the recent version because it previously worked fine.

I found this out on a collapsing/expanding element which I'm now unable to expand because it closes itself almost instantly.

[frankiefu]

Chrome bug: http://crbug.com/422242

Fixed in Chrome beta, should be pushed to stable at some point.