@julian and @tcc did your solutions work before?
I have multiple pages on my deployed app which were using workflows to format inputs. They’re all still working on the deployed version, but not anymore on the editor preview. I believe this might be a new bug, because it used to work 100%.
Last deploy I made was around April 7th, after the “ReferenceError: process is not defined” bug last week. Maybe they’ve changed something in the mean time?