When we click and drag to re-order categories, queries, or reports we may unintentionally move only the icon.
We are currently evaluating this issue and will update this article when we have more information.
To re-order these items, be sure to click in the middle of the box rather than on the icon. If we accidentally move the icon, it will go back to it's usual location when we navigate away and come back.
Steps to Duplicate
Click Manage Queries
If you have any icons to the right of a category (like, Private) click and drag it up or down
Click on the name of a Category
Click on any Private, Read Only, Static, System Defined, Compound Query, or Custom Account Query icons and drag up or down (Doesn’t happen with the Query Associations icon)