I can not understand where the inscription on the form comes from, the text of the inscription is the same as on the button. Where is the mistake?

Question

WPF

XAML code

<Window.Resources>
        <Style TargetType="Button">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <Grid>
                            <Border BorderThickness="3"
                                    BorderBrush="Green"
                                    Width="100"
                                    Height="50"
                                    Background="Pink"
                                    CornerRadius="14"/>
                            <ContentPresenter HorizontalAlignment="Center"
                                              VerticalAlignment="Center"/>
                            <ContentControl Content="{TemplateBinding Content}"/>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Window.Resources>

    <StackPanel>
        <Button Content="knopka"/>
    </StackPanel>

Answer 1

I think it's the ContentControl. Most likely it displays an inscription, look at how the standard button template is made.