That looks fine. (r g b a all 0), I was wondering if that defaulted to 1 but it’s not so that is OK.
I don’t see other oddities.
You’d have a post process volume on the level, or a post process effect on the camera etc. You can see where the post process material is referenced if you right click the asset “find references”. Reason I mention post processing is because that affects the rendering on top of what you configure for the glass material. That is the “special effect” type of rendering calculated on top of everything else, which people can use to create see through effects (outlines of an object behind walls etc., objects lighting up regardless of environment).
don’t really see anything else, the seller should know if you haven’t done any modifications (see if it happens on a new project).