https://bugs.winehq.org/show_bug.cgi?id=37146
--- Comment #7 from Vincent Povirk madewokherd@gmail.com ---
From a WINE_MONO_TRACE=wrapper log:
[00000009: 1.30686 0] ENTER: (wrapper native-to-managed) <Module>:CGpFont.{ctor} (CGpFont*)(0415A97A, )
The constructor probably supposed to have thiscall calling convention, and we currently lack support for native-to-managed thiscall wrappers.