http://bugs.winehq.org/show_bug.cgi?id=29536
--- Comment #6 from Mark K markk@clara.co.uk 2013-05-02 14:33:24 CDT --- I also saw the problem testing with a Lubuntu 12.10 VirtualBox VM, which suggests the problem isn't caused by the Nvidia binary driver, and with a Xubuntu 13.04 VM, which suggests the problem isn't caused by Openbox (Xubuntu uses xfwm4 for its window manager).