Divi Builder has three modes of operation. The wireframe mode is the oldest drag and drop UI mode for Divi. It was followed by a PageBuilder mode using scroll bars as necessay to allow drag and drop edits. This PageBuilder mode has been enhanced with fullpage or fullsite editing mode.
Now this is the ultimate in WYSIWYG PageBuilding because users get to see how their edits will effect the page directly. This is a major drawback with the Gutenberg Block Editor. But the Divi editor has a very crowded edit bar at the bottom of the screen with 17 icon triggers users must master. This is a problem for all of the top PageBuilders as they add more features – the controls and workflow are prone to becoming more complex and complicated.