This bug is not only present on Windows, but also when using Wine with Linux. I'm trying to debug this problem here: http://bugs.winehq.org/show_bug.cgi?id=27814
I guess the issue doesn't occur in all Windows versions (Wine has an option to imitate various Windows releases, but it doesn't work in this case). As modders, do you have any additional information which could help to iron out this bug from Wine?