Footer is suddenly missing after updating Xamarin.Forms

[SebastianKruseWago]

As soon as I update Xamarin.Forms to 4.1.0.709244 or later, the Footer is no longer visible. I'm 100% sure this is not an issue of my code because it works with Xamarin.Forms 4.1.0.581479 and earlier exactly like this. I'm not sure if this is a Xamarin.Forms or FlowListView issue.

This is my current implementation:

<flv:FlowListView Grid.Row="1" x:Name="DataListView" FlowColumnExpand="None" FlowColumnMinWidth="340" SeparatorVisibility="None" HasUnevenRows="true"
                  FlowItemsSource="{Binding Data}" IsGroupingEnabled="False" BackgroundColor="{DynamicResource DarkBackgroundColor}"
                  FlowColumnTemplate="{StaticResource EntryTemplate}" Header="{Binding Header}" Footer="{Binding Footer}">
    <flv:FlowListView.HeaderTemplate>
        <DataTemplate>
            <Label Text="{Binding}" TextColor="{DynamicResource TextColor}" FontAttributes="Bold" Margin="10,20" HorizontalTextAlignment="Center" LineBreakMode="WordWrap" />
        </DataTemplate>
    </flv:FlowListView.HeaderTemplate>
    <flv:FlowListView.FooterTemplate>
        <DataTemplate>
            <Label Text="{Binding}" TextColor="{DynamicResource LightTextColor}" FontSize="Micro" Margin="{OnPlatform iOS=20 30 20 20, Default=20}" HorizontalTextAlignment="Center" LineBreakMode="WordWrap" />
        </DataTemplate>
    </flv:FlowListView.FooterTemplate>
</flv:FlowListView>