Gore Footprints Effect bug

Hello,

I’m using the Gore Footprints effect, and it looks like it’s leaving a visible square or “box” underneath each footprint. Instead of blending naturally with the surface, the footprint appears to have a boxed background, which makes the effect stand out in an unintended way.

I'm providing links for 2 screenshots taken.

https://ibb.co/jZHCT26s
https://ibb.co/2069PhqX