In macOS, setting TransparencyLevelHint to AcrylicBlur results in an abnormal display. #18453

Describe the bug

When in focus

When losing focus

As shown in the figure above, the background turns white when the window loses focus.

To Reproduce

Window w1 = new();
w1.TransparencyLevelHint = [WindowTransparencyLevel.AcrylicBlur];
w1.Background = Brushes.Transparent;
w1.Show();

Expected behavior

When the focus is lost, the background should not turn completely white.

Avalonia version

11.2.3

OS

No response

Additional context

No response