UWP ScrollViewer inside a SplitView.Content not scrolling - xaml

Question

I´m trying to build a UWP app and I have the follow components:
MainPage:
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<StackPanel Name="TituloStackPanel" Orientation="Horizontal">
<Button Name="HamburguerButton" Content="" FontFamily="Segoe MDL2 Assets" Height="50" Width="50" Click="HamburguerButton_Click"/>
<TextBlock Name="Titulo" Text="Estrutura de Dados" VerticalAlignment="Center" Margin="10"/>
</StackPanel>
<SplitView Name="PrincipalSplitView" DisplayMode="CompactOverlay" IsPaneOpen="False"
CompactPaneLength="50" OpenPaneLength="200" Grid.Row="1">
<SplitView.Pane>
<StackPanel>
<StackPanel Orientation="Horizontal">
<Button Name="ListasButton" Content="L" Width="50" Height="50" Click="ListasButton_Click"/>
<TextBlock Text="Listas" VerticalAlignment="Center" Margin="10"/>
</StackPanel>
<StackPanel Orientation="Horizontal">
<Button Name="PilhasButton" Content="P" Width="50" Height="50"/>
<TextBlock Text="Pilhas" VerticalAlignment="Center" Margin="10"/>
</StackPanel>
<StackPanel Orientation="Horizontal">
<Button Name="FilasButton" Content="F" Width="50" Height="50"/>
<TextBlock Text="Filas" VerticalAlignment="Center" Margin="10"/>
</StackPanel>
</StackPanel>
</SplitView.Pane>
<SplitView.Content>
<TextBlock Text="SplitView Content" VerticalAlignment="Center" HorizontalAlignment="Center"/>
</SplitView.Content>
</SplitView>
</Grid>
The next Page will be loaded inside the Content of the SplitView.
<Page>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="200"/>
</Grid.ColumnDefinitions>
<ScrollViewer Background="Cyan" Grid.Column="1" VerticalScrollBarVisibility="Auto">
<RelativePanel Padding="20" MaxHeight="700" VerticalAlignment="Top">
<A lot of Components: TextBlocks, TextBoxes, RadioButtons, ... />
</RelativePanel>
</ScrollViewer>
</Grid>
</Page>
The ScrollViewer should work as a Toolbar on the right side of the window. But when I resize the window, the vertical scroll not works.
Full screen:
Resized:

Answer 1

The problem is because your SplitView is in the Row with the <RowDefinition Height="Auto"/>. This makes the SplitView higher than the Screen and does not scroll as a result.
Use <RowDefinition Height="*"/> for this row to make it as high as the screen is.
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<SplitView Grid.Row="1">
....
</SpitView>