Referring threads seems inconsistent...

[Matt Ford <matt@dancingfrog.co.uk>]

Hi,

I try to leave but always end up coming back to GNUs :-)

So, I have a bunch of flagged emails in my nnimap back-end.  When I
visit the group only the flagged mails are listed.  For a bit more
context I hit A-T and sometimes nothing happens and other times it fills my
thread beautifully.

I can make the thread filling work very nicely if I do a / o followed by
/ w - subsequent issues of A T work well. I guess this some how caches
the threads and subsequent queries work.

Alternately I can do C-u Return and / m ! and then run the A T.  This
first gets the whole group and then limits the display back to the
marked articles.

Is there anyway I can make things work on normal entry.  Is this a bug?
I'm using Plugged by the way.  Perhaps its interaction affects things?
That's a guess.

Any thoughts?

Cheers,

-- 
Matt