Complete checkout button is gone from Checkout page, for development store, for logged in users

Short description of issue

The “pay and complete checkout” button is gone from checkout page, for logged in customers

Link to Shopify Store

Reproduction steps

Go to any development store, login with a customer account, add items to cart, then go to checkout.

Then at the checkout page, the “Pay / complete checkout” button is not there, hence unable to complete checkout

Additional info

Seems like only happening with logged in customers, with previously saved shipping address

What type of topic is this

Bug report

Upload screenshot(s) of issue