You can delete the other thread, it was improperly titled.
I've created a menu with a horizontal root that displays child elements vertically. Works fine on my and the other dev boxes we have. When we deploy to the server however, the root menu displays vertically. I've added the x-ua-compatibale meta tag with content="ie-edge" to no avail. I also added the Flow Horizontal attribute on the actual control even though it's the default.
Is there some css property I'm missing? Thanks in advance.