Terminal Services Manager Stays Minimized

I couldn't see my Terminal Services Manager application that I use to monitor our RDS servers at work and see who is logged on and with which applications.

I thought the app had crashed so I killed the tsadmin.exe task and reopened it. But it looked the same, like a minimised application.

It turns out that the application was running fine, it just could not be seen. The window was drawn outside the bounds of my display.

To fix it, I just went to this registry key:

HKCU\\Software\Microsoft\Windows NT\CurrentVersion\Terminal Server\TSADMIN

and deleted the "Placement" value.

That's it! It worked fine after that.