http://bugs.winehq.org/show_bug.cgi?id=13290
--- Comment #7 from Vitaliy Margolen vitaliy@kievinfo.com 2008-08-20 10:51:34 --- Today's GIT added a workaround: Set [HKCU\Software\Wine\DirectInput] "MouseWarpOverride" to "disable" to disable mouse warping. It can also be set per application.
Of course the bug is still not fixed.