Build : 'I' (started to fail in 'H', worked in 'G')
app : see below
OS : all platforms

What should be a tooltip is now just a large blinking block and the tooltip gets obscured by this large constantly repainting block. API is fine but the rendering of the tooltip fails.


import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ToolTipBug extends JPanel {

public void init() {
  }

  public ToolTipBug() {
  setBackground(Color.black);
  setToolTipText("Tooltip goes here");
  }
 
public Dimension getPreferredSize() {
  return new Dimension(300,300);
  }


      public static void main(String argv[]) {
  WindowListener wnd = new WindowAdapter() {
  public void windowClosing(WindowEvent e) {System.exit(0);}
   };
JFrame f = new JFrame ("ToolTipBug");
f.addWindowListener(wnd);
f.getContentPane().add("Center", new ToolTipBug());
f.pack();
f.setLocation(50,50);
f.validate();
f.show();
}
 
}