Yes, this is a known bug, and often requested feature. see bug
http://bugzilla.mozilla.org/show_bug.cgi?id=56419
-Seth
Blandon Ray wrote:
> This remains one of the ever-shrinking number of missing features that
> keep me from using Mozilla as my main Usenet reader. There is a bug on
> this (bug 56419), but it hasn't moved much in about four months,
> despite having 13 votes and 6 duplicates. Here's the problem:
>
> When performing a search on a newsgroup, I double-click on one of the
> returned messages in the Search window, and this opens it in its own
> separate window. Communicator 4.x has a button (the Goto Folder
> button) in that new window, which will show that message in the
> three-pane Thread view; Mozilla lacks this feature. When I search for
> messages, I usually want to read the whole resulting thread in the
> normal fashion, and without the button, I have to find the message in
> the Thread view manually, which is next to impossible in a
> high-traffic group.
>
> I can't imagine that I am the only one who finds this to be a major
> problem. Is anything happening with this? Am I going to have to learn
> to write code just so I can fix it myself?
>
> --
> Thanks
> Blandon Ray
>