In IE 10, the column menus disappear when you scroll right.
In this dojo example, scroll down so you can see the scroll bar to go to the right. Scroll all the way to the right, then back up so you can see the column menus.
You'll see that the column menus disappear altogether.
This only happens in IE10. IE11 fixes the issue. I don't know about IE9 or lower.
Any way around this?