Kilderon

Playing one of my first attempts at the Beta. Early game phase, I spot a monster I don't recognize, some sort of assassin creature, I save the game before attempting. Post massacre, I reload my save game. Game reloads with party on top of nearby enemy lair and immediately offers Tactical combat with a rock spider. This monster was nearby but was not attacked nor was a course plotted to it when the save was made. After killing the spider, tactical combat fails to close