FFImageLoading Images disappear on collectionview scroll Xamarin Forms

Description

I implemeneted experimental collectionview with Xamarin Forms 4.0, images are loading when app launched but after we scroll images are getting disappeared. I'm not sure this is the issue of CollectionView or FFImageLoading , so posting in both github Repo To Track : https://github.com/xamarin/Xamarin.Forms/issues/6341

Steps to Reproduce

On scroll of collectionview(Xamarin forms 4.0) images getting disappeared in iOS, Android works fine.

Expected Behavior

Images should not get disappeared.

Actual Behavior

On scroll of collectionview(Xamarin forms 4.0) images getting disappeared in iOS, Android works fine.

Basic Information

Version with issue: Current Latest version
Last known good version: never tried with collectionview before
Platform: iOS

Reproduction Link / Code

Here is the code

       <CollectionView
                ItemsLayout="{x:Static ListItemsLayout.HorizontalList}"
                ItemSizingStrategy="MeasureFirstItem"
                ItemsSource="{Binding FavouriteRecipes}"
                HeightRequest="220">       
         <CollectionView.ItemTemplate>
                    <DataTemplate>
                        <Grid
                            Padding="5,2"
                            WidthRequest="140">
                            <Frame
                                HasShadow="true"
                                Padding="0"
                                Margin="0"
                                IsClippedToBounds="true"
                                CornerRadius="2"
                                BackgroundColor="White">
                                <Grid
                                    Margin="0">
                                    <Grid.RowDefinitions>
                                        <RowDefinition
                                            Height="150" />
                                        <RowDefinition
                                            Height="*" />
                                    </Grid.RowDefinitions>
                                    
                                        <ffimageloading:CachedImage
                                            Grid.Row="0"
                                            HeightRequest="150"
                                            LoadingPlaceholder="placeholder_square.png"
                                            ErrorPlaceholder="placeholder_square.png"
                                            Aspect="AspectFill"
                                            Source="{Binding Image}" />
                                    <StackLayout
                                        Grid.Row="1"
                                        Orientation="Vertical"
                                        Padding="5,0">
                                        <Label
                                            Font="14"
                                            Text="{Binding Title}"/>
                                        <StackLayout
                                            Orientation="Horizontal"
                                            HeightRequest="30">
                                            <Image
                                                Source="ic_clock_black.png"
                                                Aspect="AspectFill"
                                                WidthRequest="20"
                                                HeightRequest="20"
                                                VerticalOptions="Center"
                                                HorizontalOptions="Start" />
                                            <Label
                                                Font="13"
                                                Text="{Binding Time}"
                                                VerticalTextAlignment="Center" />
                                        </StackLayout>
                                    </StackLayout>
                                      </Grid>
                            </Frame>
                        </Grid>
                    </DataTemplate>
                </CollectionView.ItemTemplate>
            </CollectionView>

Here is the link of video https://www.dropbox.com/s/wpgxkl6prtmn0iu/collectionview%20ffimageloading%20issue.mov?dl=0