Ripple foreground does not work for buttons with custom content

[WilliamForsdal]

Describe the bug Let me know if this is actually a bug, or if I am just missing something.

When pressing a button with custom content, for example:

<Button>
    <StackPanel>
        <Ellipse Width="20" Height="20" Fill="Red" />
        <TextBlock Text="Text!" />
    </StackPanel>
</Button>

The text does not change color to the ripple foreground color.

To Reproduce Steps to reproduce the behavior:

1. Create a new WPF project and add App.xaml resources like the readme
2. Add this to the main window:

   <Window.Style>
   <Style TargetType="Window" BasedOn="{StaticResource {x:Type Window}}" />
   </Window.Style>
   <Grid>
   <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center" >
       <Button Content="This button has correct foreground when pressed" />
       <Button Margin="5" HorizontalAlignment="Center">
           <StackPanel>
               <Ellipse Width="20" Height="20" Fill="Red" />
               <TextBlock Text="This does not!" />
           </StackPanel>
       </Button>
   </StackPanel>
   </Grid>

3. press buttons

Expected behavior Pressing the buttons should change the foreground color to the correct ripple foreground.

Screenshots

Additional context

[WilliamForsdal]

Nevermind, didn't read the docs, as always 👍