I have a layout that includes a tabbed layout, the front tab of which contains a portal. While revising the layout I moved the tabbed layout, as a result of which the fields for the portal disappeared. I found them hidden behind the portal.
I repositioned them on the first portal row so that they show as they should in Layout view, just where they were before. None of their edges touch the borders of the portal (so far as I can tell). But I can't get them to show in Browse mode.