Keyboard ToolbarItemPlacement not appearing

I'm using the sample code provided here: https://developer.apple.com/documentation/swiftui/toolbaritemplacement/keyboard?changes=_8

and the buttons are not appearing above the Keyboard on either iOS or iPadOS.

Has anyone else been able to get keyboard toolbar buttons to appear?

I am only able to get this working if it's embedded within a NavigationView, at the topmost level of my application.

Keyboard ToolbarItemPlacement not appearing
 
 
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