Since it happened only once I have not much information about it, sorry. It was in the beginning of the game, perhaps the 3 or 4 mission and it was the first fight in that mission. The images where overlapping right from the beginning of that fight and I could attack the enemies relatively normally. Once the first enemy got defeated it vanished and only the image of the reminding enemy was left. So I could keep playing the game as normal after this. I hope that helps.