Tap gestures not working while using DragAndDrop

[NickeManarin]

Platform (please complete the following information):

• OS: Android
• Device: AndroidEmulator
• Sdk vervion: Android SDK 28 (Pie)
• Xamarin.Forms: 4.0.0.482894

Describe the bug
I'm using a HorizontalListView with DraggableViewCell as the item template.
Tap events are not triggered on the ViewCell (Both the event Tapped as the attached command TapCommandEffect.Tap and any custom command that I created by extending the DraggableViewCell class).
The TapCommandEffect.Tap attached command works normally while being used on a ContentView inside the ViewCell.

To Reproduce

<r:HorizontalListView x:Name="MainListView" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand" ColumnCount="2"
                      CollectionPadding="16" ItemSpacing="8" EnableDragAndDrop="True" ItemHeight="120"
                      ItemsSource="{Binding Items}" ListLayout="Grid">
     <r:HorizontalListView.ItemTemplate>
        <DataTemplate>
            <r:DraggableViewCell x:Name="DraggableViewCell"
                             e:ViewEffect.TouchFeedbackColor="Coral" 
                             e:TapCommandEffect.Tap="{Binding BindingContext.SelectPhotoCommand, Source={x:Reference ThisView}}"
                             e:TapCommandEffect.TapParameter="{Binding .}">
                <ContentView>
                    <Grid Margin="5" BackgroundColor="CadetBlue">
                    </Grid>
                </ContentView>
            </r:DraggableViewCell>
        </DataTemplate>
    </r:HorizontalListView.ItemTemplate>
</r:HorizontalListView>

I'm using a ObservableCollection as my backing list.

[roubachof]

A TapCommand property will be added in the next version for dealing with drag'n'drop scenarios

[roubachof]

Fixed in v1.2.0