在Interface Builder中创建的UITabBarController - 选项卡的“更多”和“编辑”重新排序不起作用

I've got a UITabBarController configured in Interface Builder as my main application interface. It has seven tabs, which triggers the "More" functionality of UITabBarController. When you select the "More" view, you get the "Edit" button as well, allowing the user to configure the order of the tabs. However, when you click "Edit", I can't actually reorder the tabs; dragging the icons around doesn't seem to have an affect.I've got a UITabBarController configured in Int