According to WC_Settings_Page::save()
do_action( 'woocommerce_update_options_' . $this->id . '_' . $current_section );
Actions like woocommerce_update_options_products_inventory are not executed, while the generic action woocommerce_update_options_products is executed properly at the same time, having the correct global $current_section value.
Fixed in #18609
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Fixed in #18609