https://wpml.org/errata/woocommerce-multilingual-variable-product-stock-status-is-not-updated-when-it-gets-out-of-stock-in-the-second-language/
WPML Multilingual & Multicurrency for WooCommerce - Variable product stock status is not updated...
Nov 20, 2024 - If you have a variable product in WooCommerce, and it goes out of stock with an order made in the second language, the stock is not updated in the other
variable productstock statuswpmlmultilingualmulticurrency