bug#2087: 23.0.60; problem with display-buffer and pop-to-buffer

I recently switched to CVS Emacs (of 1/15/2009 version). In
this version compilation-goto-locus (in compile.el) and
Man-notify-when-ready (in man.el), which are two that I've seen
problem so far, called either display-buffer or pop-to-buffer with a
non-nil and non-t value of 'other-window' parameter. 

It appears display-buffer is having a problem with such value. And, as
a result, the buffer intended to be popped up does not show. 

To reproduce this problem, start "runemacs -q" and then M-x man RET
procmail RET. The man page will not be displayed (even it has been
prepared in a buffer). 

Please take a look, thanks. 

---------------------------------------------------------------
In GNU Emacs 23.0.60.1 (i386-mingw-nt5.1.2600)
 of 2009-01-15 on LENNART-69DE564
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4) --no-opt --cflags -Ic:/g/include -fno-crossjumping'

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: ENU
  value of $XMODIFIERS: nil
  locale-coding-system: chinese-big5
  default-enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  auto-image-file-mode: t
  shell-dirtrack-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t