jdk1.2beta4a:Appletviewer menu options don't work after closing a cloned window

To reproduce this bug:
1. Start appletviewer.
2. From the appletviewer menu choose option: Applet/Clone...
3. The cloned applet appears on the top-left of the screen.
4. From the clonned appletviewer menu choose option: Applet/Close
5. The cloned applet dissapears.

Now, if you go back to the original applet, none of the options work.

There is a bug filed (4118625) for the jdk1.1.6 version.
This bug needs to be fixed for 1.2.