Hi again,
The issue has been resolved. What worked for me is to delete all the existing webhooks in WooCommerce settings > Advanced.
I don’t really know how this webhook works, but seeing a fresh install of Woocommerce has zero webhook, I went ahead and delete them all. Checkout is fine now.
Bạn ezvisa vào woo-viet > assets > provinces.css rồi xoá hoặc comment dòng “display: flex;” thử xem
.woocommerce-billing-fields__field-wrapper {
display: flex;
flex-wrap: wrap;
}