Restricted Field still visible from Dev Tools

In lead doctype, we have added visibility permission for the “Support Team” role on the field named “Lead Owner”

When logging in as a user with the “Support Team” role, the field is not visible from the UI.

But it is still visible from dev tools through the “Support Team” role, is there any way so that the field value won’t be visible from the dev tools?

Thank You!

Implement field-level permissions.