Reply To: Пропали кнопки размеров и цвета на странице товара

Hello,

The sizes are selected http://prntscr.com/mp4v9e

The adding is effected via AJAX that is the way Woocommerce works. When there are more than 40 items in an attribute, adding is effected via AJAX.

Test the issue on the Storefront theme to get convicted.

Best Regards