How to place an ActionSheet on iPad?

Hey Guys,

i am trying to show an ActionSheet in the lower right corner (iPad). But i cannot find any placing options. It seems that the ActionSheet is only showing correct on an iPhone, but not on an iPad. Do i miss something?

        var sheetConfig = new ActionSheetConfig();

        if (picker.IsCameraAvailable)
            sheetConfig.Add("Kamera", () => this.FromCamera.Execute(null));
        if (picker.IsPhotoGalleryAvailable)
            sheetConfig.Add("Galerie", () => this.FromGallery.Execute(null));

        dialogs.ActionSheet(sheetConfig);

Would be nice, if someone could give me a hint.

Thanx in advance.
Chris