There is an abnormal display in Nepali language

[RyanLiDev]

Describe the bug

When the text is opaque, there is a white border.

To Reproduce

FontFamily: Noto Sans OriginalText: Hello, Welcome Translation: नमस्ते, स्वागत छ

    <StackPanel Spacing="8" Background="LightBlue">
      <TextBlock FontFamily="/Assets/Fonts/NotoSans-Bold.ttf#Noto"
                 FontSize="95"
                 FontWeight="Bold"
                 Foreground="White"
                 Opacity="0.6"
                 Text="नमस्ते, स्वागत छ" />
      <TextBlock FontFamily="/Assets/Fonts/NotoSans-Bold.ttf#Noto"
                 FontSize="95"
                 FontWeight="Bold"
                 Foreground="White"
                 Opacity="1"
                 Text="नमस्ते, स्वागत छ" />
      <TextBlock FontFamily="/Assets/Fonts/NotoSans-Bold.ttf#Noto"
                 FontSize="95"
                 FontWeight="Bold"
                 Foreground="Red"
                 Opacity="0.6"
                 Text="नमस्ते, स्वागत छ" />
      <TextBlock FontFamily="/Assets/Fonts/NotoSans-Bold.ttf#Noto"
                 FontSize="95"
                 Foreground="White"
                 FontWeight="Bold"
                 Opacity="0.6"
                 Text="Hello, welcome" />
    </StackPanel>

Expected behavior

It should display normally. sample from figma.com

Avalonia version

11.2.0

OS

Windows, Linux

Additional context

The test found that it seemed to be caused by stroke, but TextBlock did not provide the relevant interface. Display exception:

Normal display: