Hi @Luna2,
Normally, that is not the case. The contact index page will only show those records to a user which they have access to, regardless of whether it’s the all contacts tab or any other view.
If a user is seeing records that you think they shouldn’t be seeing, this is likely a permission configuration issue. Can you confirm that this user is with 100% certainty not in the same team as other users owning those contacts? Have you also checked the extra/additional teams?
Could you please share a screenshot of the contact access permissions of this user?
There is a small chance that this is a bug but it’s more likely that the permission is either not configured correctly or that the user shares a team with other owners.
If you’re convinced this is a bug, you can of course also reach out to HubSpot support directly in-app, via chat or email.
Best regards