getResource() problem

I'm on v4r4 using jdk 1.1.7 with a very old PTF level.  I have a program
that issues a ResourceBundle.getBundle("com.a.b.foo").  The resources
are in a properties file called foo.properties.  The properties file is
in the same jar as the class that contains the getBundle call and the
path in the jar for the foo.properties file is correct.

However, I keep getting a MissingResourceException when executing the
getBundle.  The message with the MissingResourceException is

        "can't find resource for com.a.b.foo_en_US"

I created a *JVAPGM for my jar file with OPTIMIZE(10) and I'm executing
with RUNJVA INTERPRET(*OPTIMIZE).

If I extract the foo.properties file from the archive and place it on my
classpath, java still can't find it.  However, if I change the name to
foo_en_US.properties, java is able to find it.

Here are my questions:

1.  Is this a bug that is fixed in a PTF?  I couldn't find a PTF
matching this description in my search.  I've asked the systems people
to download and apply the latest group PTF so maybe this will clear
things up.
2.  Does AS/400 jdk 1.1.7 support finding a .properties file in a jar on
the classpath to satisfy a getBundle() request?

Any insight would be appreciated.

Thanks,
Gary
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