Why do some applications (QuickTime Player, Trillian) stay on top of the other windows and appear in all my desktops?
This usually happens for windows that don’t have the usual window manager decorations, that is the border and buttons normally used to move and resize the window. The reason why they don’t have these is that this is how the application is supposed to behave on Windows. For instance, if you look at the QuickTime Player or Trillian on Windows, you will notice that they don’t have the normal title bar or borders. Wine, and thus CrossOver emulates that behavior and thus the window does not have the regular window manager decorations. But to do this bit of magic, Wine currently has to make this an unmanaged window. Unfortunately some window managers treat such windows in special ways. For instance the KDE window manager puts such windows on top of all the others, and display them in all the desktops, hence the behavior noted in the second question. We hope to remedy this problem in a future release but this is a hard problem so it may be a while. Unfortunately there is no known workaround.
