The preedit string does not appear completely after the conversion when cursor
is in the end of sentence already inputted and is in the right end of a component,
swing.JTextField.

To Reproduce:

0. (This reproduction needs Japanese Solaris and IM)

1. unzip swing.zip

2. cd swingtest/classes

3. env LANG=ja java SwingTest -command abcdefg

4. click on the right of the character 'g' in JTextField.

5. press Ctrl + Space then turn IM on.

6. type some words and press Space to convert.

7. preedit string does not appear completely.