Question Intersection coast shader appears on non-intersecting objects

After watching some tutorials on creating a coast intersection shader and adjusting it so that it is just an outline rather than a fade effect, I've noticed that a marching-ant style outline can appear on the edges of objects which aren't directly intersecting but rather projected on one another. I've attached the shader graph and a picture of the issue, any help would be very much appreciated. I should also note that this is using LWRP. This issue doesn't happen in scene view however, and the weird outline goes when I turn the render scale up to 2; this doesn't seem like the most efficient way of fixing this so I'm going to leave the thread open.