http://bugs.winehq.org/show_bug.cgi?id=30263
--- Comment #3 from Grazvydas Ignotas notasas@gmail.com 2012-03-26 05:54:46 CDT --- What font iexplore is trying to use?
Could it be that with my patch it tries to use the specified font, but that font doesn't have Chinese characters, and if you revert the patch, wine uses some default font instead that does have them?