http://bugs.winehq.org/show_bug.cgi?id=28993
--- Comment #5 from Aleksey Rukhlenko aleksey_r@list.ru 2012-03-12 05:54:17 CDT --- Also actual for Word 2010.
P.S. In fact, this is not a wrong rendering, it's a formula corruption. The formulas saved in Wine-Word are rendered wrong in Windows-Word and vice versa (see attached example).