During a battle I charged up fireball spell, before that spell went off I sent a guy into the middle of the mobs to attack. Once the spell went off I was not able to complete the casting of it because if my guy was in the area of effect I would get the message that it must target enemies (my guy was in the middle of them all and there was no way to target a mob without targeting my one of my guys as well), if I tried to cast it at a blank area of the battlefield I would get the same message. I was stuck at that point and was only able to get past it by clicking the finish battle button. I tried numerous keys to cancel the spell but nothing worked, the only option I saw was to click the auto-finish button.