customer objects are equal to eachother after observing event customer_save_after_data_object

[anthonycouckhuyt]

Preconditions

1. Magento CE 2.1.2 without sample data is installed.
2. Running on Linux Webserver with PHP 7, MySQL 5.0.12

Steps to reproduce

1. Log in with existing user in frontend.
2. Change first name of customer to 'test35'.
3. Observe the event 'customer_save_after_data_object'. Two objects are given called : 'orig_customer_data_object' & 'customer_data_object'.
4. Those two objects are identical to each other. First name in both objects is equal to 'test35'

Expected result

1. 'customer_data_object' firstname should not be equal to 'orig_customer_data_object'

Actual result

1. orig_customer_data_object and customer_data_object are equal to each other
   Screenshot here: http://imgur.com/a/IDV1t

This also happens with last name and email. There may be more, but I haven't checked.

[medinadato]

The problem here is a bug in the file vendor/magento/module-customer/Model/ResourceModel/CustomerRepository.php line 227. See below:

['customer_data_object' => $savedCustomer, 'orig_customer_data_object' => $customer]

It should be:

['customer_data_object' => $savedCustomer, 'orig_customer_data_object' => $prevCustomerData]

Until Magento Team fixes it, you should overwrite the method to fix the issue. I've written a how to here https://blog.mdnsolutions.com/magento-2-customer_save_after_data_object-equal-objects/

Cheers,

[magento-engcom-team]

@Koekoet, thank you for your report.
We've created internal ticket(s) MAGETWO-81900 to track progress on the issue.