In Kestrel FCS Build W, In GridLayout or FlowLayout when adding new String to a java.awt.List,it will lost the scrollbar's bubble up button(The triangle button
of the scrollbar in List, left for horizontal, up for vertical).

This bug only occurs on Solaris, Win32 works fine.
To Reproduce:
1. compile and run the attatch Bug.java
        2. Press "Fire" button until the scroll bar of List appears
        3. Notice the first group of List(In GridLayout) and the thrid group
           of List(In FlowLayout), it will lost the bubble button of Scrollbar.

[Kevin.Huang@prc 2000-03-20]