TERM={xterm-r5,xterm-r6} behaving badly with man(1)

Sometime in the last few months, something changed (broke IMHO) when
using TERM=xterm-r5 or TERM=xterm-r6.  I've been setting TERM=xterm-r5
when logging in to my BSD boxes remotely from my Solaris boxes, so that
man(1) works.  But after updating my relatively old (May?) -current
box, xterm-r5 and xterm-r6 no longer do the right thing when using
man.  With TERM set to either one of those, man(1) will clear the
screen after it is done, leaving no trace of the man page behind.
I've always hated HP/UX and Linux for this behavior, and our default
TERM=xterm does not exhibit this behavior.

To see this:

   $ TERM=xterm-r5
   $ export TERM
   $ man man

Anyone know how this got broke?

-- 
DE