Border removed on PancakeView

[pcdus]

Hello,

I've launched your sample with default packages: the display of the PancakeView look like expected when the style FrameTotal is applied.

<Style x:Key="FrameTotal" TargetType="pancake:PancakeView">
    <Setter Property="BackgroundColor" Value="#FFFFFF" />
    <Setter Property="CornerRadius" Value="10" />
    <Setter Property="Elevation" Value="4" />
    <Setter Property="HasShadow" Value="False" />
    <Setter Property="Padding" Value="0" />
</Style>

Here is the default screenshot.

However, after having updated the packages Xamarin.Forms to 4.8.0.1451 and Xamarin.Forms.PancakeView to 2.1.0.714, the borders are no longer visible.

Here is the new screenshot. The result is the same on iOS and Android.

Would you have an explanation?