I am testing with Junos Pulse.
I use primary and additional authentication server - where the secondary username is predefined with variable <USERNAME>@domain
In network connect the secondary username is not shown. In Junos Pulse unfortunately there is a filed to type the secondary username, although it can be left blank.
Is there any possibility to hide the secondary username in junos pulse?
Is this Pulse for Windows (desktop) or mobile? The mobile clients, I believe (99% surety), do not support dual-authentication so that may be what you are seeing.
If it is for the desktop, I would recommend a case with JTAC to confirm the expected behavior.