A workflow’s reaction in Kemble Circle is counted in that emoji’s pill with an app badge and the workflow’s name, never as a person, and a moderator’s Remove all reactions clears it too. Catch up cards and forum replies show reactions left only by a workflow. Kemble Work’s pill now says “1 app” rather than “1 person” for a workflow.
In Kemble Work, restoring an older version of a canvas, or editing a canvas from before live editing, posts the same “updated” line in the channel as live typing does when the canvas tab’s Post canvas updates to channel is on, at most once a sitting. A rename alone posts nothing.