Acrylic does not work if mica is enabled

[lhak]

Describe the bug

When mica is enabled, acrylic surfaces do not render correctly, as can be seen here with a dropdown menu:

In comparison, with mica disabled:

Steps to reproduce the bug

1. Create a window with mica background and add some controls like a dropdown menu or combo box

Expected behavior

No response

Screenshots

No response

NuGet package version

WinUI 3 - Windows App SDK 1.1 Preview 3: 1.1.0-preview3

Windows app type

• [ ] UWP
• [X] Win32

Device form factor

Desktop

Windows version

Windows 11 (21H2): Build 22000

Additional context

No response

[krschau]

@codendone Is this known?

[codendone]

Related to microsoft/WindowsAppSDK#2412. That regression was fixed in 1.1-stable, but this issue shows that the new Mica and Desktop Acrylic features unfortunately have a similar issue which needs a different fix.

[seven-mile]

Will a fix for this be available in the coming servicing update?

[gabbybilka]

:tada:Microsoft.WindowsAppSDK v1.1.5 has been released which fixes this issue.

Handy links:

• Release Notes
• Official Nuget Release