http://bugs.winehq.org/show_bug.cgi?id=26503
--- Comment #1 from Christian c_pradelli@yahoo.com 2011-03-21 09:07:17 CDT --- It can be reproduced with IBExpert Personal Edition (free) from http://www.ibexpert.net Install it, when you start it for first time select MDI windows. go to menu "Options" -> "Enviroment Options..." This is a modal window, but you can select main window and it becomes on top of the "Enviroment Options" window, after this the application hangs becomes unusable and you need to kill it.