When a document gets floated no new window appears. Why?

[CodeDevAM]

When a document gets floated via ricght click "Float" no new window appears. (It is a Desktop App with Dock.Avalonia 11.0.0.2 and Avalonia 11.0.5)

Does anyone has an idea what might cause this issue?

[CodeDevAM]

A Factory needs an HostWindowLocator to create Windows.

public Factory Factory { get; init; } = new()
{
    DefaultHostWindowLocator = () => new HostWindow()
    {
        Background = new SolidColorBrush(Color.FromArgb(0xFF, 0x1E, 0x1E, 0x1E))
    }
};

Note: By default the background is transparent. It might be usefull to set some background color to the HostWindow.