When to file "tracking" bugs in RH bugzilla

[Göran Uddeborg]

I'm still slightly uncertain about how to file bugs nowdays.  I
believe I understand the base rule is to file bug reports upstream
whenever possible.  There has also been some people mentioning the
possibility of filing a "tracking" bug in Red Hat bugzilla.  A report
that would point out the error, and give a reference to the upstream
bug report.  What I'm not sure about is under what circumstances such
a tracking bug should be reported.

To give some concrete examples to discuss around: I've recently filed
three bugs about (localization related) errors in Evolution.

    http://bugzilla.ximian.com/show_bug.cgi?id=47361
    http://bugzilla.ximian.com/show_bug.cgi?id=47525
    http://bugzilla.ximian.com/show_bug.cgi?id=47529

AFAIK, there is nothing Red Hat specific in any of these, though I
haven't verified it on any other system.  Now, would Red Hat have
liked me to mention any of them in Red Hat bugzilla too?  Or otherwise
mention it outside these bugzillas?  Or would you prefer to not hear
about it and just have the fix just show up from upstream some day? :-)

I'm a bit uncertain, could you give some clarifying guidelines?