Rendering Bug

I have noting lately a rendering bug wich draws my attention every time it manifests.

Sometimes when monsters fire cold or lightning projectiles, have not noted about fire projectiles, a white square is rendered under the monster model.

Im running PoE 1 on a notebook with AMD Ryzen 7k series CPU on a radeon integrated board.

I believe this is used so to process a fast light effect over the monsters and was not supposed to be rendered like that, so it blocks the rendered ground underneath