Working correctly.  As far as I am aware it has always worked this way.
Per RFC822 if you do not specify a "real name" field you don't need to
enclose the address in angle brackets.

On Mon, 18 Jan 1999 07:57:24 PST Rich Greenberg said:
>Would one of the Lsoft folks please tell me if this odd behaviour I
>noticed in the output of QUERY (1.8d) is:
>
> 1) Working correctly.
> 2) A known bug.
> 3) An unknown bug.
>
>When I do a QUERY listname for *@*,
>
>The first line for each user comes back something like:
>
>  Subscription options for first last <user@node>, list listname-l:
>
>sometimes broken into 2 lines.
>
>I have noticed that if the first and last names are missing (i.e. the
>user didn't supply them when subscribing) that the "<" and ">" around
>the user@node are also missing.  I have noticed that all such entries
>have the CONCEAL option set. This may be a coincidence.
>
>--
>Rich Greenberg    Work:  PM0RMG atsign WSPVM1.worldspan.com   +1 770-563-6656
>N6LRT   Marietta, GA, USA   Play: richgr atsign netcom.com    +1 770-321-6507
>Eastern time.    I speak for myself & my dogs only.        VM'er since CP-67
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