DisplayActionSheet - Windows Phone Problem

Hey guys,

I've got a problem with the function DisplayActionSheet (developer.xamarin.com/guides/cross-platform/xamarin-forms/working-with/pop-ups/).

In my app I call the function like this:

var action = await DisplayActionSheet("Select action", "Cancel", null, "Call", "Send message");

It worked completely fine till I started up the Windows Phone emulator. There, for some strange reason, the call seems not to be awaited. It just returns null immediately, then the ActionSheet is showing but never gives me a feedback what the user clicked. Did anyone else experience this?

Every help is appreciated!

Cold, snowy regards from germany!