Custom shortcut not working after ipadOS 18 update

Final attempt at a sensible discussion on here...

Over the weekend I updated my ipad (9th gen) to ipadOS 18 from 17 and I now
notice a custom shortcut isn't working properly anymore. Basically, it
creates a new note with today's date as a title and throws up two dialogue
boxes for a note description and a set of tags. Everything behaves as
before except the tags are ignored.

I have very little experience of Shortcuts and this is pretty much my first
one. Any ideas on how to debug?