iOS: Window toolbar animates when opening window

When opening Windows in a NavigationWindow the toolbar on The window is animated sliding in from the bottom. Event the first window in the NavigationWindow slides in. Toolbars should not slide in when opening windows. When doing the same in Mail the toolbar does not slide in from the button, it just follows the window.

Am I missing something? Is there some way to avoid all this sliding in?

I have added a test case showing the sliding in of toolbars

Thanks