Border radius style option for PayPal Button is not applied to every corners

[azuken]

I implemented Braintree PayPal button in an e-commerce Nuxt app, and when I try to add borderRadius option to 0, it is applied for top-left and bottom-left corners, but not top-right and bottom-right corner ; it still have a 3px border-radius.

Here is my implementation

    componentInstance.value = paypal.Buttons({
     [...],
      style: {
        borderRadius: 0,
        color: isDarkMode.value ? ButtonColorOption.Silver : ButtonColorOption.Black,
        height: 45,
        label: ButtonLabelOption.Pay,
        shape: ButtonShapeOption.Rect,
        tagline: false,
      },
    });

And the result :