Personally I wouldn't use mirror mode. The script is designed for Injection due to the amount of refresh rates that is required. All hunter scripts are refresh demanding in order to calculate traps correctly. But I don't really see a problem with stuff like falconry or deadfall for mirror mode I guess. It is just recommended to use Injection.
If anyone has posted a bug report, I have replied to them!
http://projectpactscripting.com/bug_reports.php