[4.x]: shippingAsBilling duplicates the address element ID

[lukeholder]

What happened?

Description

When submitting a shipping address and making billingAddressSameAsShipping or shippingAddressSameAsBilling the other address gets set, and incorrectly gets new ID every time, increasing the number of orphaned addresses.

Craft CMS version

4.x

Craft Commerce version

4.x

PHP version

No response

Operating system and version

No response

Database type and version

No response

Image driver and version

No response

Installed plugins and versions

[ineghi]

I do have exactly the same issue after migrated from 3.x, even with shippingAddressSameAsBilling not being set. Did you find anything ?

edit: it does exactly the same when creating a new cart. The system seems to takes the primaryShippingAddresss set on User, but does create a new address object on Cart level

[lukeholder]

This was fixed in 4.3