Multistore problem: Customers can be displayed from backoffice (another shop)

[daannet]

Employee of shop B can access the customer of shop A by URL while he doesn't have access to shop A and customer + order sharing is disabled. Customers are not displayed on the overview table. 

[vekia]

duplicated: https://www.prestashop.com/forums/topic/532220-multistore-problem-customers-can-be-displayed-from-backoffice/

continue discussion in post above.