The "CRM – Show details" right has been split
(Available from v2.0.2307.798)
The "CRM – Show details" right has been split into two separate rights:

cRM - Display sales statistics in the address master
This right is required to view sales statistics for a customer in the address master. (1)
NOTE: Some users may already have this right, as it is the former "CRM – Show details" permission.
"CRM - Display items in address master"
This right is required so that the "Articles" tab in the address master is visible to the customer. (2)
