AutoStart 5.4 build 195 + Windows Server 2008

The process is configured with "Allow to Windows Desktop", and the OS support multiple sessions.

Remote desktop to this server with user A and start up the process. It turns out that the process is started as it is green. But you can not find any process from the task manager even Show processed from all users.

Remote desktop to this server with another user B, but the process's Interface/GUI will pop up in this session.

I see that the interface should pop up on console session on Windows 2003(you can use mstsc /console to this). And on Windows 2008, the interface should pop up within the opening session.

Can anyone know why? For some servers the testing results are different from the above, the one opening and starting the process can see the GUI and dialog.

Thanks