[Gameplay] Fiora two vitals showing

I have noticed that while playing Fiora, occasionally it will appear as if the enemy has two vitals available to hit. However, when I walk away to reset the vital, only one disappears. If the new vital would be in the same place as the old one, the animation plays over the old vital. The bug went away after a little bit. I have seen this only a few times, and don't know how to reproduce it. Just thought I would help the game that I enjoy playing.