WooCommerce was updated to version 2.3.11, from version 2.3.10. Changelog:

• Fix – Check if rating is enabled before check if rating is required to a review.
• Fix – get_discounted_price needs to check if taxes are enabled.
• Fix – Fixed filetype check for digital downloads.
• Fix – Newfoundland and Labrador state rename.
• Fix – Escaped js in widget layered nav when use the dropdown option.
• Fix – Switch the permissions check for json_search_products to use the read_product capability.
• Fix – Fixed the addition of variable products using the Order API.
• Fix – Sale item exclusion logic for variations.
• Fix – Clear correct variation stock transients when setting stock.
• Fix – Switch to JSON to avoid unserializing untrusted data when handling responses from PayPal.
• Fix – API – Fixed the sanitization for downloadable files on products endpoint.
• Tweak – woocommerce_downloadable_file_exists filter.