Occasionally during battle, I can not click done to end a characters turn.
I can move them around, and if I attack or use any other ability the turn ends just fine, but I cannot simply click done to end the turn.
It also does not let me choose any other characters when this happens.
Usually I just attack an enemy to break out of it, but it just happened at a moment where there is no way for me to use an ability during this turn, which basically completely broke the battle.