Impossible to toggle the visibility of TitleBar with UseNoneWindowStyle!

[gigios]

I have the necessity to start a window without border/control buttons/resize. To do this I have added some binding to the MetroWindow properies (UseNoneWindowStyle, IsWindowDraggable and ShowSystemMenuOnRightClick).
With this settings all works fine but when I change the property defined in the ViewModel (in binding with UseNoneWindowStyle), the ShowTitleBar property stay False!
I have checked the code and in the MetroWindow.cs, the method ToggleNoneWindowStyle, set the ShowTitleBar ONLY to false without any 'restore' to true when the useNoneWindowStyle is set to false.
Another behavior is that, if I have set a binding with the ShowTitleBar, I lose this binding!

[punker76]

@gigios There is a coerce value callback for the ShowTitleBar property which causes your binding

private static object OnShowTitleBarCoerceValueCallback(DependencyObject d, object value)
{
    // if UseNoneWindowStyle = true no title bar should be shown
    if (((MetroWindow)d).UseNoneWindowStyle)
    {
        return false;
    }
    return value;
}