http://bugs.winehq.org/show_bug.cgi?id=31353
--- Comment #6 from Felix Yan felixonmars@gmail.com 2012-09-14 22:05:08 CDT --- Any CJK character will reproduce the problem, such as "我" in Chinese or "の" in Japanese.
Just copy & paste one of the above characters to notepad window and hit close button or alt-f4, it will crash.