In quest mode the scenario power was all giants are 1d4 harder to fight. The henchmen were the Ogres that roll 1d4 to gain a random power for the fight. When ever I encountered an ogre, it would roll both d4s, but then roll the d4 for a random power a second time. Visually the Ogres banish and the show a new card with the power rolled on it, but after it rolled for the power a second time it would just completely banish itself. It then had me encounter the next card in the deck.
This happened for every Ogre henchmen, and since they banished themselves I never got a chance to close the location until the location deck was empty.