Switch user on Wyse

I'm not 100% sure this is a Wyse issue or not but thought I'd ask. I've got some RDS session host servers on server 2016 running plain Windows RDS. When I connect to a session host server using the Hyper-V and I lock the machine, I can choose switch user. However, when I use the Wyse Terminal and lock the machine that switch user option is gone. I've enabled a group policy in the computer settings that says this

Computer Configuration\Administrative Templates\System\Logon - Hide entry points for Fast User 

and I've disabled it. After I rebooted that's when I was able to get the switch user by using the Hyper-V manager to connect to the VM. It just won't work with the Wyse terminals. Any ideas?

Thanks