First address entered during checkout is not saved to address book

[gorillagroup]

When the module ShipperHQ_Shipper is disabled this issue is no longer happening.
\ShipperHQ\Shipper\Plugin\Checkout\ShippingInformationPlugin is doing some things in aroundSaveAddressInformation and it seems to be causing this. I think this event "around" might not be the right one since \Magento\Checkout\Model\ShippingInformationManagement::saveAddressInformation is being called after.

Steps to reproduce:

1. Register a new user.
2. Complete checkout using physical product.
3. Start checkout with another physical product in cart.
   Expected result:
   Address used on step two is saved as default shipping address and can be used on step three.
   Actual result:
   User has to enter new address from scratch.

[wsagen]

Can you confirm the Magento version you are using? We are not seeing this issue after repeated attempts to reproduce

[gorillagroup]

This project is on 2.1.2.

[wsagen]

Reviewed with GorillaGroup and found it was unrelated to ShipperHQ. Closing