Borderless window

[taooceros]

Describe the bug
It is no longer possible to hide the titlebar with the following combination

    ExtendClientAreaTitleBarHeightHint="0"
    ExtendClientAreaToDecorationsHint="True"
    ExtendClientAreaChromeHints="NoChrome"

Screenshots
If applicable, add screenshots to help explain your problem.
FluentAvaloniaTheme

FluentTheme

Desktop/Platform (please complete the following information):

• OS: Windows 11
• FluentAvalonia Version 2.1.0-beta
• Avalonia Version 11.1.0-beta

Additional context
Add any other context about the problem here.

[amwx]

Are you using a normal window, or my AppWindow? If you're using AppWindow, you cannot use ExtendClientArea... hints that Avalonia provides. If you want to mess with the style of the window - stick with a normal Window. With AppWindow, you can replace the titlebar (if that's all you want), but the caption buttons (min/max/close), and the system window border are not customizable or removable.