Events not firing if using `setState` on event

I am using a slightly modified version to detect when the Chosen dropdown has closed (chosen:hiding_dropdown event).
When I select an option from the dropdown, Chosen fires two events, "chosen:hiding_dropdown" and "change." However, in React, only one event shows up.

You can see the reproduction here http://jsfiddle.net/jeffchan/vySpj/

Steps to reproduce:
1. Select an option from the dropdown
2. Check the console output.

Expected:
show dropdown
hide dropdown
handle change

Actual:
show dropdown
hide dropdown
##

original: https://groups.google.com/d/msgid/reactjs/cd78a2fb-2c6d-406c-b0b4-1ec8ce869308%40googlegroups.com?utm_medium=email&utm_source=footer

Start with the linked JSFiddle reproduction and compare Chosen's chosen:hiding_dropdown and change events when React setState is used. Trace the React wrapper's event handling; done means the console reports show dropdown, hide dropdown, and handle change for one selection.

Written by the indexing model from the issue text.