in mustang we have (partially) fixed problem autotransfer after explicit focus request.
It was a very simple fix: we check if there are pending focus requests and if there are we do
not perform auto focus transfer.  However this introduce another problem: suppose we have some
pending focus requests and do not perform focus transfer, but those requests fails and so
focus stuck on the component (which was removed/hidden/disabled).  Interesting that if I make the component unfocusable, everything works fine (I suspect because of restoreFocus procedure)
Here is a test which reproduce the problem (it is a simplified one, so it is not enought to fix just this particular test)

====== the test =========
import java.awt.AWTEvent;
import java.awt.Button;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.Toolkit;

import java.awt.event.AWTEventListener;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class failed_transfer_test {
    public static void main(String[] args) {
        Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener() {
                public void eventDispatched(AWTEvent e) {
                    System.out.println(e);
                }
            }, AWTEvent.FOCUS_EVENT_MASK);
        Frame frame = new Frame("test");
        frame.setLayout(new GridLayout(3, 1));
        frame.addWindowListener(new WindowAdapter() {
                public void windowClosing(WindowEvent we) {
                    we.getWindow().dispose();
                }
            });
        final Button btn1 = new Button("press me");
        frame.add(btn1);
        final Button btn2 = new Button("I shouldn't have focus at the end");
        frame.add(btn2);
        final Button btn3 = new Button("I should have focus at the end");
        frame.add(btn3);
        btn1.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent ae) {
                    btn2.requestFocusInWindow();
                    btn2.setVisible(false);
                    // setFocusable(false) works fine however
//                     btn2.setFocusable(false);
                }
            });
        frame.pack();
        frame.setVisible(true);
    }
}