Bundle from http://webwork.sfbay/j2se/1.3
  j2re-1_3_1_08-solaris-sparc.sh

To reproduce:

1. Launch awttest
   % java -cp awt/classes awttest -command abcdefghi
2. Make a caret active to click at the beginning of the string
   in awt.TextArea
3. ATOK12 ON
4. Press the following keys:
   a i u e o k a k i k u k e k

The preedit string before pressing 'e' sequencially is
displayed properly but not after. And when pressing the
last character 'k', all the preedit string disappears.

In awt.TextField, the behavior of showing preedit string
looks so strange.

In swing components: JTextArea and JTextField, it's not
reproducible with ATOK12.

Using Wnn6, it looks OK on displaying preedit string.