Can't input anything using jdk1.1.6N after input some chinese using Swing's demo

To reproduce:
In zh locale of Solaris 2.6 or 2.7
1. Use jdk 1.1.6N
2. Use Swing 1.0.2
3. cd SWING_HOME/examples/SwingSet
4. run 'runnit'
5. select TableView from the Menu, and select a field to edit.
6. type Ctrl+Space to change to Chinese input method and input one or more chinese characters.
7. Switch to another field, than we cannot input anything, neither ASCII nor Chinese in any kind of input areas.

There is no problem if I use jdk1.1.6D