2D_FullScreen/DisplayModeTest is not FullScreen

Testsuite name:2D functionality.
Test name(s):2D_FullScreen/DisplayModeTest
Product(s) tested:7u60b33(32bit)
OS/architecture:ubuntu13.10-x86

Error log file (if present): http://sc11152645.us.oracle.com:8080/evergreen/results/7u60/b33/2d/ubuntu13.10-x86/results-fun3/ResultDir/DualMode/DualMode.log
Reproducible: Always
Reproducible on machine:Evergreen-machine
[If Sometimes] Also reproducible on machine:

Is it a Regression:No
(7u60b12 on win7-sp1-x86 pass)
[If Regression] Regression introduced in release/build:
Test result on the last GAed release for this train: 7u55b08(32bit) on ubuntu13.10-x86, fail
[if Fail] Test result on FCS: 7u55b14(32bit) on ubuntu13.10-x86, fail
Is it a platform specific issue: yes - Ubuntu 13.04 & 13.10( ubuntu 12 - PASS.)
 (7u60b33 on ubuntu13.04-x64 fail ,7u55b08 on solaris11-sparc pass )

Steps to reproduce:
1.Clone the 2d functional workspace
1a. hg clone http://sqe-hg.us.oracle.com/hg/index.cgi/testbase/javase/functional/7 /Arvin/2d
1b. cd 7_2d
1c. hg clone http://sqe-hg.us.oracle.com/hg/index.cgi/testbase/javase/functional/7/2d
2. Install the test bundle 7u60b33(32bit) (download from http://jre.us.oracle.com/java/re/jdk/7u60/promoted/fcs/b33/bundles/linux-i586/jdk-7u60-linux-i586.tar.gz) locate at /Arvin/2d/jdk1.7.0_60
3. Install stable bundle 7u45b18(download from http://jre.us.oracle.com/java/re/jdk/7u45/promoted/fcs/b18/bundles/linux-i586/jdk-7u45-linux-i586.tar.gz) under /Arvin/2d/jdk1.7.0_45
4. Install ute from attachment locate at /Arvin/2d/ute
5. add testlist.fail from attachment locate at /Arvin/2d
6. Create result dir at /Arvin/2d/results
7. create the script 2d.sh as:

#! /bin/sh

UTE=/Arvin/2d/ute
$UTE/ute run -harness tonga -stablejavahome "/Arvin/2d/jdk1.7.0_45" -component 2d -env KEYWORDS=manual -env TONGA_MAIN_CLASS=DTonga -testlist "/Arvin/2d/testlist.fail" -env TONGA_JAR=$UTE/tool/tonga/tonga4.0.jar -jdk "/Arvin/2d/jdk1.7.0_60" -testbase "/Arvin/2d/7_2d/2d" -results "/Arvin/2d/results"
8.run the command : sh 2d.sh

Case Instruction:
Check FullScreen is Displayed with DisplaySetting Option
Change various displaymode configuration and check it is changed accordingly if its corect
Click on "Assertion Pass"
else if there is any exception thrown click on "Assertion Fail".

Actual behavior:
1.After clicking starttest button ,the displayed is not FullScreen and we can't see the test buttons(EXIT ,Set Display, Reset Display) refer to DualMode1.jpg
2.We change system dispalymode, the test window is nomal FullScreen refer to DualMode2.jpg,but after we clicking the other place eg. instruction dialog ,we will find it displayed is abnomal same as DualMode1.jpg