Security permission doesn't work if add the same filed in form using personalization

We need disable Credit limit in Customer card for group of user. We restrict access to the control Credit_CreditMax in CustTable form according to https://community.dynamics.com/ax/f/33/p/111412/462377#462377 (André Arnaud de Calavon responded on 2 Sep 2013 8:50 AM) and everything works fine. But if the users add field CreditMax from source CustTable again using button Personalise, the new control is editable.

We don't want to restrict user using Personalize, it's very useful functionality. What we only want is some users in our organization can change customer credit limit and the others only can see the content of the field but never change it.

Any suggestions?