Our Jira Software has a default workflow for the Kanban project. Yesterday I saw that we couldn't turn on the epic panel in our board settings, and I can't add something to a backlog in Card Layout. I don't know what happened, have you ever seen that?
I can't add a screenshot here, but I can't turn on an epic panel in Columns and don't see anything about the backlog in Card Layout:C
It's the Jira cloud