I used the example in the documentation at https://developer.xamarin.com/guides/cross-platform/xamarin-forms/user-interface/listview/customizing-list-appearance/ pretty much verbatim but I can't get the listview to work with GHT, Header, or Footer... not using those, all is fine.. If I use a GroupHeaterTemplate, the group headers disappear even removing the GroupDisplayBinding attribute which in some docs it says that will contradict having a GHT.
Also using Header="Header" Footer="Footer" attributes along with the Xaml sample given in the documentation, I get a runtime error that Header is unknown.
See attachments.
What am I doing incorrectly?
Thanks.