Bug#4927934 (JTree traversal is unlike Native windows tree traversal) should be fixed specific to the LAF.This bug was specific to windows LAF. Looks like that it is implemented on all laf. Now if you look at Motif LAF, native Motif apps have the behavior which is similar to old implementation in java. The traversal does not stop at the first
leaf node. GTK also has similar behaviour.

The Java version is :
java version "swing-jcg-sparc-01-2004-08-23-int.mustang"
Java(TM) 2 Runtime Environment, Standard Edition (build swing-jcg-win-01-2004-08-23-int.mustang)
Java HotSpot(TM) Client VM (build 1.5.0-rc-b63, mixed mode)

Note: THIS BUG IS FILED AGAINST TIGER-RC AS THERE WAS NO ENTRY FOR MUSTANG