Just booted the Gnome-18.1.2 live ISO, and I cannot open the terminal. Tried from the dash to dock, keyboard shortcut, and app menu. All I get is a spinning icon for a few seconds, then nothing.
Perhaps one of the devs can look at it.
Also, just noticed, after booting back into my normal install, the clocks have been reconfigured to use UTC time. IMO a live distro should not be changing these settings!