Visual artifact on the Typing Derby

A visual artifact from the Typing Derby that spreads a green film over a portion of the screen

Description

After leaving the Typing Derby results screen stepping back and quickly switching to third person from first person while staring into the lower left valleys of the raceway seemed to bring it up, but I’m uncertain of the exact cause

What I expected to happen

not have everything be green

What happened

everything was green

Notes

not a high priority bug since it was hard to repeat and was quickly fixed by walking away and moving my mouse away from the derby stage