Quick note, I tried this on Railo 4 and the same code works fine which leads me to believe it’s an ACF bug unless some can tell me that I’m just doing something dumb 
Thanks!
~Brad
ColdBox Platform Evangelist
Ortus Solutions, Corp
E-mail: brad@coldbox.org
ColdBox Platform: http://www.coldbox.org
Blog: http://www.codersrevolution.com