ColdBox/coldbox-platform — pull request #95 by webflint (2012-05-16 16:44:59+00:00)
Title: Removed redundant defaultLocale cookie set

Both cfset cookie["DefaultLocale"] & cfcookie send the cookie in the response to the client so only one is needed. I chose cfcookie since it gives you more options and we may provide options in the future to persist this cookie for longer than the browser session.

Ben has a writeup about this behavior:
http://www.bennadel.com/blog/1913-Setting-ColdFusion-Cookies-With-CFCookie-vs-Cookie-Scope.htm