...
Also relatedly, the previous Reader form ceased to work, but that was about permissions; see https://knowledge.technolutions.com/hc/en-us/community/posts/6395720055963-Sharing-a-workaround-for-a-quirk-RE-new-Workflow-Editor-and-Reader-Permission. I have set up the population-aware Reader permission for GSBS, and that currently seems to be working.