<Page
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Page.Resources>
        <Style x:Key="RightAlignedCompactToggleSwitchStyle"
           BasedOn="{StaticResource DefaultToggleSwitchStyle}"
           TargetType="ToggleSwitch">
            <Setter Property="Background" Value="Red"/>
        </Style>

        <Style x:Key="MyUserControl" TargetType="Button"> <!-- Target Type doesn't matter here, using as a makeshift Templated Control in XAML Studio -->
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <!-- For some reason template binding is negating the resource override here -->
                        <ContentPresenter Content="{TemplateBinding Content}">
                            <ContentPresenter.Resources>
                                <Style TargetType="ToggleSwitch" BasedOn="{StaticResource RightAlignedCompactToggleSwitchStyle}"/>
                            </ContentPresenter.Resources>
                        </ContentPresenter>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <Style x:Key="MyUserControlHardcoded" TargetType="Button">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Button">
                        <ContentPresenter>
                            <ContentPresenter.Content>
                                <ToggleSwitch/>
                            </ContentPresenter.Content>
                            <ContentPresenter.Resources>
                                <Style TargetType="ToggleSwitch" BasedOn="{StaticResource RightAlignedCompactToggleSwitchStyle}"/>
                            </ContentPresenter.Resources>
                        </ContentPresenter>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Page.Resources>

    <StackPanel Padding="40" Spacing="16">
        <!-- Doesn't Work as expected -->
        <Button Style="{StaticResource MyUserControl}">
            <ToggleSwitch/>
        </Button>
        <!-- Works within template -->
        <Button Style="{StaticResource MyUserControlHardcoded}"/>
        <!-- Works outside of a control -->
        <ContentPresenter>
            <ContentPresenter.Content>
                <ToggleSwitch/>
            </ContentPresenter.Content>
            <ContentPresenter.Resources>
                <Style TargetType="ToggleSwitch" BasedOn="{StaticResource RightAlignedCompactToggleSwitchStyle}"/>
            </ContentPresenter.Resources>
        </ContentPresenter>

        <!-- expected result -->
        <ToggleSwitch Style="{StaticResource RightAlignedCompactToggleSwitchStyle}"/>
    </StackPanel>

</Page>