Wrong alternative of radio button choice in the cart?

I have had an alternative with a radio button on my woocommerce products for a long time. Choice1 and Choice2, where choice1 is set to default.

Now, when adding the product to cart, in the cart the choice is always changed to Choice2, or more specific, the last choice if there are several choices. It doesn’t matter what choice the customer choose, it’s always the last choice that ends up in the cart.

I am not sure when this started, but recently. I now sent products to the customers with the wrong specifications…