Unfortunately, since I have rebooted my phone I am now unable to get the keyboard to work in snx desktop mode (snx -d user@host startxfce4)
I have tried pressing CTRL + Enter, but I am still unable to enter anything in on the keyboard. Once I close snx, I see the input I entered appear in X Terminal.

I am able to start individual applications (snx user@host firefox) and enter text into them after pressing CTRL + Enter.

I have purged snx from apt, and re-installed; to no avail.