[Bug 57119] WPF app (VOCALOID) fails to initialize Markup

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57119

--- Comment #1 from Gauvain Roussel-Tarbouriech  ---
Decompiling a bit more the application, the relevant logic that fails here is:

public void InitializeComponent()
{
    if (!_contentLoaded)
    {
        _contentLoaded = true;
        Uri resourceLocator = new
Uri("/VOCALOID6;component/mainwindow/mainwindow.xaml", UriKind.Relative);
        Application.LoadComponent(this, resourceLocator);
    }
}

Where LoadComponent fails (the call stack goes a little bit deeper and calls a
system xaml parser to initialize the UI but this isn't really relevant).

It seems to be fully a WPF bug, I can't find any unexpected issues within the
application's logic itself.

The xaml can be found in VOCALOID6.DLL resources, which can be viewed using
ILSpy.