I am using NSPopupButton in the application. Its contents is binding to the data from view model. It works fine when the type is set to pull up. However, if I change to pull down, the first item is not selectable anymore. Is this an expected behaviour or a bug?
I could use the sample to reproduce the issue. https://developer.xamarin.com/samples/mac/PopupBindings/
Just change the type for the popup button from pull up to down.