On a more-or-less stock Red Hat 5.2 system with packages emacs-X11-20.3-3 and cvs-1.10.2-1 installed, type C-h i C-s cvs [ret] [ret] C-s troubleshooting [ret] [ret] and you'll get: Fatal error (6).zsh: abort (core dumped) emacs -geometry 82x50+365+36 Which is not what it is supposed to do.
I was unable to reproduce this bug in the test lab. The CVS troubleshooting page came up properly.