Greetings.
I found that the wine bug 28993 (http://bugs.winehq.org/show_bug.cgi?id=28993) is actual for CrossOver (downloaded free trial) and Word 2010. Although, the bug is named "wrong rendering", I've just realized that it's a corruption: formulas created in Wine-Word (or CrossOver-Word) are rendered wrong in Windows-Word and vice versa.
Honestly, I don't know how to post bugs in CrossOver, so I posted this message.
Best regards, Aleksey.