It would really help a lot if the forms for creating Component Templates would give you a warning before you try to close or refresh the browser tab. Been creating a template and have been wasting at least an hour or so because when switching tabs to looks things up, I accidentally close the tab or it refreshes and then I need to start all over again.
Thanks, @catn0b0t, you may want to consider filing a feature request if one doesn't already exist on this subject.