No payment creation prevention without shipping method set

[orzechdev]

What I'm trying to achieve

I'm trying to create payment with products which requires shipping and without any shipping method selected and therefore I'm expecting to get an error and be not able to create payment. Although the payment is created and no error is returned.

Steps to reproduce the problem

1. Add products to cart, which requires shipping.
2. Set shipping address.
3. Set billing address.
4. Create checkout.
5. Create payment --> no error was returned.

What I expected to happen

Error returned by checkoutPaymentCreate when shipping method is not set.

Screenshots

System information
Operating system: MacOS 10.15.3