Steps to reproduce

1. Create a Simple Payment block
2. Edit the block
3. Select text in email field
4. Try to copy (unexpect result in clipboard) or cut (no text removed, same unexpected clipboard)

What I expected

Cut and copy of selected text work as expected

What happened instead

Block HTML is copied:

<!-- wp:jetpack/simple-payments {"currency":"JPY","content":"This mostly works fine","email":"a.payment.address@example.com","paymentId":247,"price":42,"title":"An example Simple Payment"} -->
[simple-payment id="247"]
<!-- /wp:jetpack/simple-payments -->

Screenshot / Video