bug#20410: 24.5.50; cursor not updated after yank of non-ASCII string from the clipboard

[YAMAMOTO Mitsuharu]

Steps to reproduce:

1. Copy some non-ASCII string (say, "あ") to the clipboard.
2. $ emacs -Q -D &
3. C-x C-b
4. C-y
5. C-p

Expected Result:

The cursor moves upward by Step 5.

Actual Result:

The display is not changed between Step 4 and 5.

Moreover, if you make the Emacs frame expose by obscuring and
revealing it with another window after you turn off your X11
compositing manager, then you'll see the parts other than the upper
mode-line and the echo area are not redrawn (see the attachment).

                                      YAMAMOTO Mitsuharu
                                mituharu@math.s.chiba-u.ac.jp

In GNU Emacs 24.5.50.1 (i686-pc-linux-gnu, GTK+ Version 2.10.4)
 of 2015-04-23 on localhost.localdomain
Windowing system distributor `The X.Org Foundation', version 11.0.70101000
System Description:     CentOS release 5.11 (Final)

Important settings:
  value of $LANG: ja_JP.UTF-8
  value of $XMODIFIERS: @im=SCIM
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t