User blog comment:Rupert Giles/Global Navigation January Update/@comment-11842624-20150130180754/@comment-957747-20150130192518

This is actually due to the admin's choice of background image (solid white in the center) and the ThemeDesigner being set to show the blue background in the middle of the split. This would be something you'd take up with the administrators on Disney Wiki itself to let them know of the issue with their design.