In a recent update, we removed the concept of an "active catalog" and replaced it with a dropdown in the pages tab that is used to select which catalog's pages are being edited. This allows users to edit pages for a catalog that is not live, but it is also resulting in users adding/editing pages on the incorrect catalog and getting confused as to why their changes are not displaying.
A simple fix would be to give the user the ability to designate a "default" catalog, and display the pages of that catalog when they open the "pages" tab.
Additionally, warning the user that they are editing the pages of a catalog that does not have an attached URL would help prevent confusion.