It's definitely a bug in ubiquity. The installer takes care to prevent you from restarting or shutting down during installation (for the obvious reasons), but its hook to undo that at completion is not running in this scenario for some reason.
It's definitely a bug in ubiquity. The installer takes care to prevent you from restarting or shutting down during installation (for the obvious reasons), but its hook to undo that at completion is not running in this scenario for some reason.