- Plesk Onyx for Linux
- The traffic usage statistics are shown as Unlimited for a customer at Tools & Settings > Traffic Usage by Customers > Limit:
- While clicking on the customer name it can be seen that all subscriptions, which are assigned to this user, indeed have limits:
This is Plesk bug PPPM-10825, which will be fixed in future Plesk updates.
There is no workaround at the moment.