http://bugs.winehq.org/show_bug.cgi?id=18120
--- Comment #21 from George Yohng georgewi@oss3d.com 2009-08-23 18:06:22 --- In our case the problem was with the font substitution. There was just a single font installed on the system, and it didn't substitute properly. I.e., inside Qt application setting an unexisting font resulted in just blank data.