http://bugs.winehq.org/show_bug.cgi?id=31406
--- Comment #34 from Erich Hoover ehoover@mines.edu 2012-09-10 11:03:22 CDT --- (In reply to comment #33)
... Occasionally launching the PlayOnline Viewer (polboot.exe/pol.exe/FINAL FANTASY XI) will result into a black box, with the background music playing. No graphics are rendered, and no sound is produced by moving the mouse around where the options would be (or using the game-pad to go through different options), so no interaction with the application is possible, except for being able to minimize/maximize the application by clicking the Task Manager entry, or from the window icons. ...
What version of libxcb do you have? Do you think you could try the patch from comment #31?