Virtual-only quotes use default shipping address for estimation instead of default billing address

[navarr]

When you have a cart containing only virtual products and are a signed-in customer with different default shipping and billing addresses, the default shipping address information will be populated in the cart estimation field instead of the default billing address information - providing an incorrect estimation of tax charges.

Preconditions

1. Magento 2.2.6-dev installed
2. Default tax rates configured (typical of a clean installation)
3. Addition of a Tax Rule that enables those rates
   
4. A virtual product created with price point $10

Steps to reproduce

1. Create a customer account
2. Create a default billing address of New York, such as:
   123 Main St
   Flushing, NY 11354
3. Save
4. Create a default shipping address in an area without tax rates, such as:
   2301 Renaissance Blvd
   King of Prussia, PA 19406
5. Save
6. Browse to category to add Virtual product to cart
7. View cart page

Expected result

1. Estimate shipping and tax pre-filled with US / New York / 11354, tax estimated as $0.84

Actual result

1. Estimate shipping and tax pre-filled with US / Pennsylvania / 19406, no displayed tax

[magento-engcom-team]

Hi @navarr. Thank you for your report.
To help us process this issue please make sure that you provided the following information:

• Summary of the issue
• Information on your environment
• Steps to reproduce
• Expected and actual results

Please make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce. To deploy vanilla Magento instance on our environment, please, add a comment to the issue:

@magento-engcom-team give me {$VERSION} instance

where {$VERSION} is version tags (starting from 2.2.0+) or develop branches (2.2-develop +).
For more details, please, review the Magento Contributor Assistant documentation.

@navarr do you confirm that you was able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

[navarr]

@magento-engcom-team give me 2.2-develop instance

[magento-engcom-team]

Hi @navarr. Thank you for your request. I'm working on Magento 2.2-develop instance for you

[magento-engcom-team]

Hi @navarr, here is your Magento instance.
Admin access: https://i-17744-2-2-develop.engcom.dev.magento.com/admin
Login: admin Password: 123123q
Instance will be terminated in up to 3 hours.

@navarr, thank you for your report.
We've acknowledged the issue and added to our backlog.