java\awt\Focus\UnaccessibleChoice\AccessibleChoiceTest.html testcase from regression workspace is failing with 64 bit jdk but passing with 32bit jdk on AMD64 WindowsXP-pro.

JDK Information:
=================
64bit:
-----
java version "1.4.2_11-ea"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_11-ea-b01)
Java HotSpot(TM) 64-Bit Server VM (build 1.4.2_11-ea-b01, mixed mode)

32bit:
-----
java version "1.4.2_11-ea"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_11-ea-b01)
Java HotSpot(TM) Client VM (build 1.4.2_11-ea-b01, mixed mode)

Workspace Location:
===================
Master workspace:
/net/shiva.sfbay/test/MyTestArea/JDK1.4.2/workspace_142/test/
Child workspace:
/net/urts071.india/export6/testSuites/Regression/workspace_142/test

How to reproduce using JTReg Tool:
=================================

1. Install 64 bit j2sdk1.4.2_11 on test machine(AMD64 windows xp-pro)
2. Run the above mentioned testcase using JTreg tool.

Exception Thrown:
==================
java.lang.Runtime Exception: Choice can't be controlled by keyboard

Observation:
=============
The same testcase on AMD64 WindowsXP-pro is passing with 32bit jdk. This testcase is also passing on x86 windows-xp-pro.