Every page load creates a cart order if none is present. So when a user
logs in, they always have an order stored in their session. And
therefore, we never got to recover an old order.
We could have fixed the code to restore old orders. But as far as I can
tell, order recovery hasn't been working for years and I couldn't find
any issue requesting this feature.
If we wanted to implement order recovery, it should probably be designed
more carefully and included in the `current_order` method.
We used to delete old cart orders so that they wouldn't re-appear after
a successful checkout of another order. Keeping them ensures that we
don't remove an order that is still used by another device. It also
makes sure that we keep references of failed payments.
When we imported and merged Spree's controller modules with our
decorators, Rails started using Spree's original code again.
This was first included in v3.2.0 and deployed on 28 July 2020.
