We have found the issue in the Identity Manager - View Submitted Tasks.
Attribute -Screen Logical attribute - |VALUE| the value of the attribute is shown in plain text.
In the Admin Tasks definition, Style is set as Password.
All Identity Manager
The data classification settings provided by the product would not apply to screen logical attributes:
Setting "field to match against" for the screen logical attribute configuration within the profile screen in IM to point to another Attribute such as PASSWORD for example would allow the screen logical attribute to behave in the same way that PASSWORD behaves and that would allow the screen logical to be masked in the same way that PASSWORD field is masked.