Need help with unexpected shader behavior

Hi guys, I encountered a strange behavior while working on my game. I am using the same shared material with the same properties on two different objects and I am having slightly different results on the visuals. The two objects have the game general properties and are in the same layer and tag. I don't have that much experience with shaders so, for the love of everything, I cannot fathom what could be different to cause this behavior:



Any guidance or advice will be much appreciated.

Also, as additional information - I am changing the sharedMaterial property of the MeshRenderer at runtime between light and dark material. Maybe that has something to do with this strange effect?