This bug happened a few times to me, but it doesn't always look like this.
What happens is the following: If you are playing a card with Vi in hand, there is that animation of her gauntlets powering up. If you are hovering the Vi card in your hand while this animation plays, then the animation will freeze on the moment you are hovering her.
So it can also be that you have her gauntlets stuck there. It seems that he hovered her right at the start of the animation when there is some energy glowing.
It disappears once you play the Vi card that triggered this visual bug.
This bug happened a few times to me, but it doesn't always look like this.
What happens is the following: If you are playing a card with Vi in hand, there is that animation of her gauntlets powering up. If you are hovering the Vi card in your hand while this animation plays, then the animation will freeze on the moment you are hovering her.
So it can also be that you have her gauntlets stuck there. It seems that he hovered her right at the start of the animation when there is some energy glowing.
It disappears once you play the Vi card that triggered this visual bug.