Seat arona tinted windows

[dan-a30mh]

Hi all, does anyone in here have a new facelift arona with tinted rear windows?
The other half has just taken delivery of one and there is a definitive square outline in the rear passengers window as if a sticker or something has been there and it’s a completely different shade to the rest of the window. Is this a defect does anyone know?

dealer is around an hour from us otherwise I would swing straight in and ask them

Cheers