Cars - Audi RS 4 Avant 2013 - Broken exterior trim material

Material of exterior trim of Audi RS 4 Avant 2013 seems broken. Material should be matt aluminium but instead it seems to be a weird semi reflective black thing, like it’s missing texture.

It seems that this issue first appeared in FH4. In FH3 materials look as they should, with all exterior trim elements (grille, front splitter, roof railings, window trim, mirrors, tail pipes, rear diffuser trim) featuring matt aluminium finish.
Additional images provided for reference.

FH5 RS4 2013 -





FH3 RS4 2013 -


IRL RS4 2013 -