Okay so as you can see in this thread here http://xenforo.com/community/threads/creating-an-addon-and-a-weird-thing-happens-help.53005/, I'm having trouble creating an addon. So we've narrowed it down the Listeners. If I add "ad_sidebar_bottom" to the Event Hint then the gray bar shows up at the time like you can see in the picture of the thread above. If I remove "ad_sidebar_bottom" from the Event Hint then gray bar goes away, but the template doesn't go into the sidebar like its supposed to. That being said I think the Event Hint is bugged somehow.