M-g sometimes moves point one line up

[Stephen Berman <stephen.berman@gmx.net>]

In the Group buffer I have often observed this: when point is on the
first group in a topic and in column 0, then after I type `M-g' and the
number of new articles in the group is updated, point moves up one line,
to the name of the topic.  Unfortunately, this doesn't happen every time
and I haven't found a reproducible recipe.  But maybe someone else has
seen this or has an idea, what the problem could be.

Steve Berman