Guest Checkout Shipping Address step is shown only to the first Guest User

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 7.4 DXP U3
• Fix Version/s: 7.4 DXP U4
• Component/s: Shopping Experience
• Labels:
  • 7.4-blocker
  • QA-AUTOMATION
  • pt-app-security-review
• Severity of Issue: Critical
• Git Pull Request: https://github.com/liferay-commerce/liferay-portal/pull/1757
• QA Test Name:
  • LocalFile.GuestCheckout#AssertGuestsWithSameEmailHaveDifferentAccounts
• QA Test Score: 5

Steps to reproduce:

1. Create a Speedwell site
2. Navigate to Channels -> Speedwell Portal -> Enable Guest Checkout -> Create Guest Checkout Authentication page
3. Log out
4. Navigate to Speedwell site as a Guest
5. Add a product to the cart and complete the checkout
6. Navigate to the Speedwell Catalog page
7. Add a product to the cart
8. Open the mini-cart
9. Click on Submit
10. Click on Continue as a Guest

Expected Behavior:

 On the guest checkout, the Shipping Address page should be always visible and checkout should be completed one step at a time.

Actual Behavior:

 After the first checkout as a guest has been completed, when the guest user tries to checkout another guest cart the Shipping Address page is not visible and it's not possible to complete the checkout.