Steve doesn't hide, almost hoping Loki will take the initiative in this particular instance.

"I'm sure he does." After everything Loki managed on the helicarrier, after the way he stared straight into the cameras guarding his cell and delivered taunts to people he couldn't see, Steve isn't about to question Loki's situational awareness. Steve does not, at least, look down at Natasha and give her away, even if he thinks hiding is pointless. "I'm wondering how long it will take for him to do something about it."