Editor covered by xamarin forms keyboard - xamarin.forms

Question

Hello friends how are you?
I tell you that I have a page that aims to write a message and store it. The problem is that when I position myself in the editor the screen is cut showing only half of the editor. What could be happening? Could you help me?. Thank you very much for your help.
Here my code:
</TabbedPage>
<ContentPage>
....
</ContentPage>
<ContentPage>
....
</ContentPage>
<ContentPage x:Name="MessagesContentPage" Title="Messages" >
<Grid BindingContext="{Binding MessageViewModel}">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid Grid.Row="0" VerticalOptions="Start">
<ScrollView>
<ListView
x:Name="OpportunityMessagesListView"
SeparatorVisibility="Default"
IsRefreshing="{Binding IsRefreshing}"
SelectionMode="None" >
<ListView.ItemTemplate>
<DataTemplate >
<ViewCell >
<ViewCell.ContextActions>
<MenuItem x:Name="MenuItemDeleteMessage" Clicked="MenuItemDeleteMessage_Clicked" Text="Eliminar" IsDestructive="True" CommandParameter="{Binding Id}" IsEnabled="{Binding IsMenuEnabled}">
<!--<MenuItem.IconImageSource>
<FontImageSource Glyph="Rechazar" FontFamily="{StaticResource FontAwesomeSolid}" Color="#e82424" />
</MenuItem.IconImageSource>-->
</MenuItem>
</ViewCell.ContextActions>
<Grid x:Name="Item" Padding="3" >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Label Grid.Row="0" Grid.Column="0" Margin="0" Text="{Binding Message}" VerticalTextAlignment="Center" HorizontalTextAlignment="Start" HorizontalOptions="FillAndExpand" LineBreakMode="CharacterWrap"/>
<Label Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2" Text="{Binding CreationTime, StringFormat='{0:yyyy-MM-dd HH:mm:ss}'}" TextColor="LightGray" BackgroundColor="Transparent" HorizontalTextAlignment="End"/>
</Grid>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</ScrollView>
</Grid>
<Grid Grid.Row="1" VerticalOptions="End" Padding="3" Margin="3">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="8*" />
<ColumnDefinition Width="2*" />
</Grid.ColumnDefinitions>
<customControl:ExtendedEditor x:Name="MessageExtendedEditor" Grid.Row="0" Grid.Column="0" AutoSize="TextChanges" Placeholder="Esccriba información de seguimiento" />
<Button Grid.Row="0" Grid.Column="1" x:Name="SaveMessageButton" Clicked="SaveMessageButton_Clicked" FontFamily="{StaticResource FontAwesomeSolid}" Text="" HeightRequest="57" VerticalOptions="End" FontSize="27" BackgroundColor="Transparent" BorderColor="Transparent" TextColor="#5694ff" />
</Grid>
</Grid>
</ContentPage>

Answer 1

Just as a suggestion, considering that we are talking about Xamarin Forms it's better to explain if you have this issue just on Android, iOS or both (or UWP in case).
Anyway, I think that at the following link you can find all the help that you need
https://xamarinhelp.com/accommodate-on-screen-keyboard-xamarin-forms/
Let me know if it solve your problems. In case it won't solve your problem I think it is better if you explain the problem in a more detailed way.