Email Delivery Details Error after 25D release

Summary:

With the new release (25D) the email delivery details report does NOT anymore show all the delivery information that was previously available.
The list does not show all the contact but just a subset or the total absence.
Customer cannot make any analysis about the campaign and Unfortunately this issue is shown in ALL the campaigns.

This behavior is unacceptable for the customer.

Why this report is no more available?

Version (include the version you are using, if applicable):

25D