FULL PRODUCT VERSION :
Java 7u4

ADDITIONAL OS VERSION INFORMATION :
Windows 7 64Bit

A DESCRIPTION OF THE PROBLEM :
The Synth property "ComboBox.popupInsets" is ignored in Java 7 - it works fine with Java 6.

REGRESSION. Last worked in version 6u31

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Execute the test case and click into the comboBox. The popup appears - the popup size is 10 pixels wider than the comboBox width and the popup overlaps the comboBox by 5 pixels.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The popup size should be 10 pixels wider than the comboBox width and the popup should overlap the comboBox by 5 pixels (negative y-offset)
ACTUAL -
The width is equal to the comboBox width and the popup does not overlap the comboBox.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.io.ByteArrayInputStream;
import java.io.InputStream;

import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.UIManager;
import javax.swing.border.LineBorder;
import javax.swing.plaf.synth.SynthLookAndFeel;

public class SynthComboBoxPopupInsetsTest extends JFrame
{
  private static String synthXml = "<synth>" +
  " <style id=\"all\">" +
  " <font name=\"Dialog\" size=\"12\"/>" +
  " </style>" +
  " <bind style=\"all\" type=\"REGION\" key=\".*\"/>" +
  " <style id=\"arrowButton\">" +
  " <property key=\"ArrowButton.size\" type=\"integer\" value=\"18\"/>" +
  " </style>" +
  " <bind style=\"arrowButton\" type=\"region\" key=\"ArrowButton\"/>" +
  " <style id=\"comboBox\">" +
  " <property key=\"ComboBox.popupInsets\" type=\"insets\" value=\"-5 -5 5 -5\"/>" +
  " </style>" +
  " <bind style=\"comboBox\" type=\"region\" key=\"ComboBox\"/>" +
  "</synth>";
  
  public static void main(String[] args)
  {
    EventQueue.invokeLater(new Runnable(){
      public void run()
      {
        try
        {
          new SynthComboBoxPopupInsetsTest();
        }
        catch (Exception e)
        {
          e.printStackTrace();
        }
      }
    });
  }

  public SynthComboBoxPopupInsetsTest() throws Exception
  {
    InputStream is = new ByteArrayInputStream(synthXml.getBytes("UTF8"));
    SynthLookAndFeel laf = new SynthLookAndFeel();
    laf.load(is, SynthComboBoxPopupInsetsTest.class);
    UIManager.setLookAndFeel(laf);

    String[] data = {"Very Looooooooooooooooooooong Text Item 1", "Item 2"};
    JComboBox combo = new JComboBox(data);
    combo.setBorder(new LineBorder(Color.BLUE));
    add(combo, BorderLayout.NORTH);

    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setSize(new Dimension(400, 300));
    setLocationRelativeTo(null);
    setVisible(true);
  }
}

---------- END SOURCE ----------