BEANSCONTROLWINDOW appears on IE5.5 with Java Plug-in.

The attached simple Java applet spawn a strange, white, blank window
called BEANSCONTROLWINDOW. This window contains nothing and has no
window frame, and it is impossible to close it except by killing that
BEANSCONTROLWINDOW task.

This problem can appear on Internet Explorer 5.5 with Java Plug-in
1.2.2.p006 and also with 1.3.0-C. But it doesn't occur on Netscape
Navigator 4.7 and Internet Explorer 5.0 and below. I can reproduce
it on Window 98, and the customer said he could do it also on Windows
95 and NT4.0.

How to reproduce)

1) Put all attached files into a directory.
2) Open First.html on Internet Explorer 5.5.
3) Click "Go to 2nd page" button.

Then BEANSCONTROLWINDOW appears.