Has anyone else seen this bug?

https://preview.redd.it/oah3f3bc5eif1.jpg?width=1920&format=pjpg&auto=webp&s=7bb75452b7e27311a9a4efeec3b598ce5a960b83

Basically when I started to drag the body the whole screen started glowing reaally brightly. Just curious what that is, bc I got scared af