Bug 58095 [Preferences] Selecting pref page moved dialog to other screen
When I move the preferences dialog to my secondary screen and change a prefpage, the entire dialog moves back to my primary screen and "hugs" the right border of the main screen.
bundles/org.eclipse.jface/src/org/eclipse/jface/window/Window.java
* backpointer. Clients must not call the method directly.
 * </p>
 *
 * @param manager the window manager, or <code>null</code> if none
 */
public void setWindowManager(WindowManager manager) {
	windowManager = manager;
	
	if (manager != null) {
		Window[] windows = manager.getWindows();
		for (int i = 0; i < windows.length; i++) {
			if (windows[i] == this)
				return;
		}
		manager.add(this);
	}
}
/**
 * Sets the exception handler for this application.
 * <p>
 * Note that only one handler may be set. Other calls to this method will be ignored.
 * <p>
 * @param the exception handler for the application.
 */
public static void setExceptionHandler(IExceptionHandler handler) {
	if(exceptionHandler instanceof DefaultExceptionHandler)
		exceptionHandler = handler;
}
}