Declination, does the invoice show me the product cover image instead of the declination image?

[Thierry L]

Hello, I am with Prestashop v1.7 and the Classic theme. I just saw a small problem with the product thumbnails on my invoices and delivery notes. For a product in combination, the invoice shows me the cover image of the product instead of the image of the variation. Where can I check this? Has anyone ever had this problem? Thank you