Wikimedia Bugzilla is closed!

I have two userbuckets cookies, for the paths '/w and '/wiki''  :-(
Here's how I think this happens.  The Create Account link on enwiki goes to http://en.wikipedia.org/w/index.php?title=Special:UserLogin&type=signup
but you can also start at en.wikipedia.org/wiki/Special:UserLogin?&type=signup , which will set a different cookie (in Firefox) because the path is different.  The form submits to  /w/ which gets and sets the other cookie

The fix is is easy
    $.cookie('userbuckets', $.toJSON( bucketCookies ) , { expires: 365 }); //expires in 1 year
should be
    $.cookie('userbuckets', $.toJSON( bucketCookies ) , { expires: 365, path: '/' }); //expires in 1 year

but I don't know what happens if you set cookies on parent paths... three cookies? No doubt the behavior varies between browsers.