DotNetNuke 5.0 has changed the way that the page administrator edit mode works. In previous versions of DotNetNuke, when you were in “edit” mode, the page would display the content inside of the various panes on the page. This made it possible to see the panes when you were ready to place a new module on the page. The downside to this behavior was that the pane borders and pane titles often caused problems with the skin. For power users and administrators who were logged into the site, this was problematic since they would were often displayed a substandard rendering of the site.
With DNN 5.0, pane titles and borders are no longer shown in edit mode. This allows administrators and power users to have a more pleasant experience. The video below shows the new behavior and how it aids in module placement without the side-effect of breaking the visual appearance of the page.