try to run java3D example program that contains GUI, such as those under
AlternateAppearance directory, user can only use GUI on the original
screen. That is, if user move the program window to other screens the
GUI will only show blank. Even alt-F4 (kill pgm) key will not work on
other screens. Maybe this bug should file under AWT category but I
want Java 3D team to have a look first.