Automatic updating (of display?) of the buffer *cvs* fails

[Markus Rost]

Call M-x cvs-examine on a local CVS directory ("~/cvs/emacs/" in my
case).  After that command is finished hit in buffer *cvs* the key S
(which runs the command cvs-mode-mark-on-state) on a file with status
Need-Update, hit RET (so that all files with status Need-Update are
marked), and then hit O (which runs the command cvs-mode-update).
That runs usually a while and when it is done, you get the message

CVS process has completed in *cvs*

However, buffer *cvs* still displays the old information about the
status of the files.  You still see lines like

              Need-Update             man/ChangeLog

but you should see lines like

patched     * Up-To-Date              man/ChangeLog

Once you click with the mouse in buffer *cvs*, you will see the
updated version.

This problem appears since some weeks.