I created the glass of a cabin. I created a yellow-orange-ish surface and I applied transparency to the surface, so it looks like glass. When looking from far, it looks ok. However, when zooming in, some rectangles in different color appear.
Normals, no smooth shading, shadow terminator, overlapping geometry… anything else since you are just showing the result… no wireframe no shader setup.
And also: you are viewing in material preview… not rendered…
