https://bugs.winehq.org/show_bug.cgi?id=56571
--- Comment #6 from Esme Povirk madewokherd@gmail.com --- So far, I haven't been able to write proper tests for the behavior osu! expects. A test class with ClassInterfaceType.None still gets converted to VT_DISPATCH. Maybe there's something subtle about the introspection classes I'm missing.