1) In the example what is causing the buttons be automatic selected when change tab? The UIKeyNavigation only selected OnEnabled if UICamera.selectedObject is null.
This is the main reason of I need to manually select the first object when open or close a dialog.
2) In the example the key navigation are locked inside its page with overrides, and the default scene is disabled. In the situation of a dialog, I think that is easy enable/disable that edit each popup with navigation overrides.
Thanks