It looks like I found a bug with the optional "Forgot password" LDAP link.
I'm running FogBugz 8.1.4 (Unix) and authenticate with open-ldap. There is an optional field in the site configuration authentication tab to define a custom "Forgot password" link. It only actually replaces the link on the main landing page. If a user follows the upper-right "Login" link or fails to log in, they will be taken to an alternate login page with the original "Forgot password" link.
I would love a work around for this until a real fix can be released if possible.