http://bugs.winehq.org/show_bug.cgi?id=15069
--- Comment #50 from Paul Romanyszyn pgr@arcelectronicsinc.com 2010-05-24 23:22:50 --- Retested Ubuntu 10.04. Delphi 1 and Delphi 3 IDE's and several delphi based applications are affected With D5 ide no desktop change is required to trigger the error. Minimizing the main window and then restoring it followed by minimizing and restoring one of the other ide's window changes all of the windows to not be seen by the alt-tab or status bar.
The exe from bug 15062 shows the problem. Just minimize and restore it. http://bugs.winehq.org/attachment.cgi?id=15728