Jar file doesnt execute if the path to it contains cyrilic letters

FULL PRODUCT VERSION :
java version "1.6.0-rc"
Java(TM) SE Runtime Environment (build 1.6.0-rc-b99)
Java HotSpot(TM) Client VM (build 1.6.0-rc-b99, mixed mode, sharing)

FULL OS VERSION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
The .jar file which launches at double click doesn't launch if the path to it contains cyrilic letters. A path with cyrilic letters makes the .jar file fail at start, it says "Fatal exception occured. Program will exit", the title is "Java Virtual Machine Launcher".
When I put the file at "C:\orders\RotoComplectNT.jar" the same file (RotoComplectNT.jar) starts and works fine.
All files were compiled with the jdk4 (to ensure the app will run on 4 and above) and tested with jdk6 beta 99.

THE PROBLEM WAS REPRODUCIBLE WITH -Xint FLAG: Did not try

THE PROBLEM WAS REPRODUCIBLE WITH -server FLAG: Did not try

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
The only step to reproduce it is to make the path to any .jar file to contain cyrilic letters.

REPRODUCIBILITY :
This bug can be reproduced always.