Window transparency on MacOS in version 0.10.15

[GLEB-M]

Describe the bug
No transparency on tooltip corners and windows with custom template in version 0.10.15

To Reproduce

<Window xmlns="https://github.com/avaloniaui"
        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" Width="200" Height="100"
        x:Class="AvaloniaApplication1.MainWindow"
        SystemDecorations="None"
        WindowStartupLocation="CenterScreen"
        Title="AvaloniaApplication1" Name="Wnd">
    <Window.Template>
      <ControlTemplate TargetType="Window">
        <Border Name="newBorder" CornerRadius="50" Background="Green" >
          <ContentPresenter Name="ContentPresenter" Margin="{TemplateBinding Padding}" Content="{TemplateBinding Content}"  ContentTemplate="{TemplateBinding ContentTemplate}" />
        </Border>
      </ControlTemplate> 
    </Window.Template>

    <StackPanel Orientation="Vertical">
      <TextBlock HorizontalAlignment="Center" Foreground="White" Margin="10">Заголовок</TextBlock>
      <Button HorizontalAlignment="Center" Click="OnButtonClick" Margin="10" Content="123" >
          <ToolTip.Tip>
            <StackPanel>
              <TextBlock Classes="h1">ToolTip</TextBlock>
              <TextBlock Classes="h2">A control which pops up a hint when a control is hovered</TextBlock>
            </StackPanel>
          </ToolTip.Tip>
      </Button>
    </StackPanel>
</Window>

Expected behavior
Must be transparent

Screenshots

Desktop (please complete the following information):

• OS: MacOS Catalina 10.15
• Avalonia Version 0.10.15

Additional context
This problem in version 0.10.15. Version 0.10.14 is ok.
Also if take libAvaloniaNative.dylib from version 0.10.14 and put it to binary version 0.10.15, then everything works.