Declined: This feature will not be implemented as it will cause breaking changes for big part of our clients. Also some users might want to close the MinimizedPopup only when certain buttons are clicked, not when all of the RbbonControls are clicked.
That is why we attached a sample project demonstrating how to close the MinimizedPopup using the SelectedIndex property of the RadRibbonView. The only thing we need to do is to bind the SelectedIndex of the RadRibbonView in our ViewModel and change its Value to -1 if the ribbon is minimized and close the MinimizedPopup.