JPanel.removeAll зависает

package ru.skipy.tests;
 
import javax.swing.*;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import java.awt.*;
 
/**
 * PersonListTest
 *
 * @author Eugene Matyushkin aka Skipy
 * @since 24.06.13
 */
public class PersonListTest extends JFrame {
 
    public PersonListTest() {
        super("Person list rendering test");
        Person[] persons = new Person[]{
                new Person("Skipy", "+7-495-122-2222", "Moscow", BloodGroup.A, Resus.plus),
                new Person("trax", "+7-495-122-2223", "Moscow", BloodGroup.B, Resus.plus),
                new Person("Pjotar", "+7-812-122-2222", "Saint-Petersburg", BloodGroup.O, Resus.minus),
                new Person("Flanker", "+7-903-122-2222", "Ulyanovsk", BloodGroup.AB, Resus.plus),
                new Person("zoll", "+7-495-907-2222", "Moscow", BloodGroup.A, Resus.minus),
        };
        final JList<Person> list = new JList<>(persons);
        list.setCellRenderer(new PersonRenderer());
        list.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        list.addListSelectionListener(new ListSelectionListener() {
            @Override
            public void valueChanged(ListSelectionEvent e) {
                if (e.getValueIsAdjusting())
                    return;
                Person selected = list.getSelectedValue();
                System.out.println("Person selected: " + selected);
            }
        });
        JScrollPane sp = new JScrollPane(list);
        JPanel cp = new JPanel(new BorderLayout());
        cp.add(sp, BorderLayout.CENTER);
        setContentPane(cp);
        cp.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
        setSize(300,300);
        setLocationRelativeTo(null);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
 
    public static void main(String[] args) {
        new PersonListTest().setVisible(true);
    }
 
    public static class PersonRenderer extends JPanel implements ListCellRenderer<Person> {
 
        private JLabel lblName;
        private JLabel lblPhone;
        private JLabel lblAddress;
        private JLabel lblBlood;
 
        public PersonRenderer() {
            super(new GridBagLayout());
            setOpaque(true);
            lblName = new JLabel();
            lblPhone = new JLabel();
            lblAddress = new JLabel();
            lblBlood = new JLabel();
            lblBlood.setHorizontalAlignment(JLabel.LEFT);
            Font f = lblName.getFont();
            Font fp = f.deriveFont(Font.PLAIN);
            lblName.setFont(f.deriveFont(Font.BOLD, 16));
            lblPhone.setFont(fp);
            lblAddress.setFont(fp);
            lblBlood.setFont(f.deriveFont(Font.BOLD, 18));
            add(lblName, new GridBagConstraints(0, 0, 1, 1, 1, 0, GridBagConstraints.WEST,
                    GridBagConstraints.HORIZONTAL, new Insets(0, 0, 2, 2), 0, 0));
            add(lblPhone, new GridBagConstraints(0, 1, 1, 1, 1, 0, GridBagConstraints.WEST,
                    GridBagConstraints.HORIZONTAL, new Insets(0, 0, 2, 2), 0, 0));
            add(lblAddress, new GridBagConstraints(0, 2, 1, 1, 1, 0, GridBagConstraints.WEST,
                    GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 2), 0, 0));
            add(lblBlood, new GridBagConstraints(1, 0, 1, 3, 1, 0, GridBagConstraints.CENTER,
                    GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
            lblBlood.setPreferredSize(new Dimension(80,20));
        }
 
        @Override
        public Component getListCellRendererComponent(JList<? extends Person> jList, 
                                                      Person value, 
                                                      int index, 
                                                      boolean isSelected, 
                                                      boolean cellHasFocus) {
            setForeground(isSelected ? UIManager.getColor("List.selectionForeground") :
                    UIManager.getColor("List.foreground"));
            setBackground(isSelected ? UIManager.getColor("List.selectionBackground") :
                    UIManager.getColor("List.background"));
            setBorder(cellHasFocus ?
                    BorderFactory.createCompoundBorder(BorderFactory.createDashedBorder(
                            UIManager.getColor("List.foreground"), 1, 2),
                            BorderFactory.createEmptyBorder(1, 3, 1, 3)) :
                    BorderFactory.createEmptyBorder(2, 4, 2, 4));
            lblName.setText(value.name);
            lblAddress.setText(value.address);
            lblPhone.setText(value.phone);
            lblBlood.setText(value.bloodGroup.getTextRepresentation() + " " + 
                    value.resus.getTextRepresentation());
            return this;
        }
    }
 
    public static class Person {
 
        private String name;
        private String phone;
        private String address;
        private BloodGroup bloodGroup;
        private Resus resus;
 
        public Person(String name, String phone, String address, BloodGroup bloodGroup, Resus resus) {
            this.name = name;
            this.address = address;
            this.phone = phone;
            this.bloodGroup = bloodGroup;
            this.resus = resus;
        }
 
        @Override
        public String toString() {
            return "Person[" + name + "]";
        }
    }
 
    public static enum BloodGroup {
        O("I"), A("II"), B("III"), AB("IV");
 
        private String sign;
 
        BloodGroup(String sign) {
            this.sign = sign;
        }
 
        public String getTextRepresentation() {
            return name() + "(" + sign + ")";
        }
    }
 
    public static enum Resus {
 
        plus('+'), minus('-');
 
        private char sign;
 
        Resus(char sign) {
            this.sign = sign;
        }
 
        public String getTextRepresentation() {
            return "Rh" + sign;
        }
    }
}