I have such a problem, in the product card in Russian, when displayed through the button (Download PDF), it is not displayed correctly. does not understand the cyrillic only in this place.
put the photo in the letter
The reason because you missed the Cyrillic font for PDF. Please submit a new ticket to EShop category to send me the super admin account to your site there so I can upload that font to your site to resolve the problem for you.