I know the Widescreen patcher isn't responsible for this green (placeholder?) background, which is present in the original game when running at higher than intended resolutions. My question is whether this is something the patcher could potentially fix, or if I could fix it myself?

I know the Widescreen patcher isn't responsible for this green (placeholder?) background, which is present in the original game when running at higher than intended resolutions. My question is whether this is something the patcher could potentially fix, or if I could fix it myself?