to me it does not seem like a bug. I know this from iyt. And I consider it a quite logical thing, that a recon reveals every piece until the recon gets killed. Even within a move of your opponent. Nevertheless, one should clearly write it down in the rules of the game to avoid any disadvantages for newer players. If there are any new players .... ;-)
(kaŝi) Vi povas sendi mesaĝon al viaj amikoj per unu sola klako: aldonu ilin al via amiko-listo kaj poste klaku la etan koverton apud ilia nomo. (pauloaguia) (Montri ĉiujn konsilojn)