Lighting Bug using Lucen Grass Shader

Hi all,

I’m experiencing a bug using a slightly custom implementation of Lucen’s grass shader, namely that I get a lit up semi-circle instead of a full circle when I’m shining a light on it. For example here’s my flashlight on a wall;

But when I shine it on grass in the level I get this strange effect;

It’s very noticeable when the player is shining a light up a slope, not so much shining down from above.

Any insight into what would cause this would be appreciated.

Thank you!