If a lot of content is put in either the sidebar panel top/content/ or bottom section it will remove all content from the main article when you click on "view in world" and view the article in its finished condition.
Steps to Reproduce
Copy and paste a large amount of content into one of the side content ribbons
Put content in the main article section
Click "View in World" to view the article in its finished format
There shouldn't be any content showing up in the main article section, the side bar content will still be visible.