Some Extended Unicode Characters (e.g., Zodiac Symbols) Displaying Differently between UWP and WPF - wpf

Question

Certain extended Unicode characters, among which are the Zodiac symbols, are displaying differently in WPF TextBlocks vs. UWP TextBlocks. In UWP, as well as web browsers (for example, ♑), Toast messages, etc., display the characters with a purple background and white foreground. In WPF, the same characters are displayed with the control's background color and a black foreground. Ideally, the characters in WPF apps should be displayed consistently with the way they are displayed in other apps.
The following are the results of two test apps, one created as UWP and the other created as WPF. No changes were made to any of the other files (App.xaml, etc.), apart from the addition of the TextBlock control as follows:
UWP MainPage.xaml:
<Page x:Class="UwpApp1.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:UwpApp1"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Height="150" Width="150">
<Grid>
<TextBlock Text="♑" HorizontalAlignment="Center" Margin="0,0,0,0" VerticalAlignment="Top" FontFamily="Segoe UI" FontSize="48"/>
</Grid>
</Page>
UWP application screen:
WPF MainWindow.xaml:
<Window x:Class="WpfApp1.MainWindow"
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"
xmlns:local="clr-namespace:WpfApp1"
mc:Ignorable="d"
Title="MainWindow" Height="150" Width="150">
<Grid>
<TextBlock Text="♑" HorizontalAlignment="Center" Margin="0,0,0,0" VerticalAlignment="Top" FontFamily="Segoe UI" FontSize="48"/>
</Grid>
</Window>
WPF application screen:
Is anyone aware of an application setting or any other change that can be done to the WPF application so it will display these types of special characters consistently with other applications?