https://bugs.winehq.org/show_bug.cgi?id=49934
--- Comment #1 from Esme Povirk madewokherd@gmail.com --- I assume you mean the loading screen image. Hacking GdipCreateBitmapFromGdiDib to zero the image data blacks it out, so I assume it's going through that function.
There is something odd about the BITMAPINFO structure we get: biSizeImage is negative. I don't know what that means.