TextBox PlaceholderText is no longer centered correctly in v1.6.0

[Balkoth]

Describe the bug

In WindowsAppSDK 1.5 <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.5.240802000" /> it looks correct like this:

In v1.6 <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.6.240829007" /> it suddenly looks like this:

So whatever has changed it messes with the positioning of the PlaceholderText.

Steps to reproduce the bug

<Window
  x:Class="TextBoxTest.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:local="using:TextBoxTest"
  xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
  mc:Ignorable="d">

  <StackPanel
    HorizontalAlignment="Center"
    VerticalAlignment="Center"
    Orientation="Horizontal">
    <TextBox PlaceholderText="Search..." />
    <Button x:Name="myButton" Click="myButton_Click">Click Me</Button>
  </StackPanel>
</Window>

Expected behavior

No response

Screenshots

No response

NuGet package version

WinUI 3 - Windows App SDK 1.6.0: 1.6.240829007

Windows version

Windows 10 (21H2): Build 19044

Additional context

No response