Firefox 2 for Windows can access AFTv5 forms even though it is an unsupported platform.

When I go to prototype using Firefox 2.0, I can see the feedback form and feedback link, even though I am not supposed to:
http://prototype.wikimedia.org/release-en/Golden-crowned_Sparrow?bucket=1

The code is supposed to disable the forms on unsupported platforms.

Here is the list of supported platforms:
http://www.mediawiki.org/wiki/Article_feedback/Version_5/Feature_Requirements#Platforms

I am using Firefox with Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.20) Gecko/20081217 Firefox/2.0.0.20. The OS is Windows XP Professional 2002.

Version: unspecified
Severity: major
OS: Windows XP
Platform: PC
URL: http://prototype.wikimedia.org/release-en/Golden-crowned_Sparrow?bucket=1