Good suggestion. I looked at my pane and all of the settings are identical and as far as I can see the script matches as well. I wonder if some other setting I flipped in general might be blocking it? I tried changing the trigger letter to something else and still no joy.
Oddly, my github workflow works perfectly.
Edit: I removed the link between rtest and its action and now rtest shows up. Trying the same thing with r did nothing though.
I can't get /usr/bin/osascript to give me a version, but I'm running latest 10.11.5.