Webstart app fails with CouldNotLoadArgumentException when account in Korean

FULL PRODUCT VERSION :


ADDITIONAL OS VERSION INFORMATION :
All MS Windows from XP to 8.1

A DESCRIPTION OF THE PROBLEM :
This is Korean version for http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8074544 .

When Windows logon account name is Korean, home directry is Korean also.
And when this user activate application from Java Web Start, "CouldNotLoadArgumentException" occures and cannot start.

For example:
CouldNotLoadArgumentException[ 지정된 파일/URL을 로드할 수 없음: C:\Users\�\AppData\Local\Temp\javaws11]
 at com.sun.javaws.Main.launchApp(Unknown Source)
 at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
 at com.sun.javaws.Main.access$000(Unknown Source)
 at com.sun.javaws.Main$1.run(Unknown Source)
 at java.lang.Thread.run(Unknown Source)

REGRESSION. Last worked in version 7u80

ADDITIONAL REGRESSION INFORMATION:
Last worked in version 7u65


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Log in on administrator account
2. Chose Korean from the Language bar
3. Create user 테스트
4. Set "Current language for non-Unicode programs" to Korean (Korean) inside:
Control Panel -> Clock, Language, and Region -> Region and Language ->
Administrative (tab) -> Language for non-Unicode programs -> Change system locale
5. Log in on 테스트 account
6. Input URL into browser and start with jacaws.
http://docs.oracle.com/javase/tutorialJWS/samples/deployment/dynamictree_webstartJWSProject/dynamictree_webstart.jnlp
7. 4. Error occures.
CouldNotLoadArgumentException[ 지정된 파일/URL을 로드할 수 없음: C:Usersv�AppDataLocalTempjavaws2]
at com.sun.javaws.Main.launchApp(Unknown Source)
at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
at com.sun.javaws.Main.access$000(Unknown Source)
at com.sun.javaws.Main$1.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Application should be loaded correctly and start.
ACTUAL -
"CouldNotLoadArgumentException" occures and cannot start.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
CouldNotLoadArgumentException[ 지정된 파일/URL을 로드할 수 없음: C:Usersv�AppDataLocalTempjavaws2]
at com.sun.javaws.Main.launchApp(Unknown Source)
at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
at com.sun.javaws.Main.access$000(Unknown Source)
at com.sun.javaws.Main$1.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
Create logon account with single-byte characters and switch logon account only when using the application.
This is not a realistic workaround as it is too much of work.