Datastore permission error

Hi,

we have create a group users and add the users to this group. In datastore we have add rthe group users for right and set this group to pvedatastoreuser. But if a user login and go to datastore, the user can show the backups of all users.
We have test to remove the group in datasore and add users only. The same issue.

How can we fix it, to users show only her own backupfiles?

Please help, it´s a security issue. Very thanks

regards