When we assign rights to a user, either via individual rights or a Template, sometimes the rights related to client vitals don't apply properly. So in the section Client Details > Vitals, there are 4 rights. I commonly want to assign Add Vitals, Edit Vitals, and Display Vitals, but not Ability to Hide Clients.
If I individually check off the rights, then the user won't actually have access to the Vitals tab. However, if I hit the "select all" parent right, and then remove Ability to Hide Clients, the rights the user has end up being exactly the same, but it works properly in that case. So there's something misconfigured, but I don't know what exactly.