Mouse highlighting in header (and mode) line is too persistant

[Stephen Berman]

1. emacs -q (or -Q)
2. Invoke a mode that has a header line with highlightable text,
e.g. Info, Buffer Menu (list-buffers), ruler mode, also tab bar mode
from the external library tabbar.el.
3. Drag the mouse pointer over the header line until a portion of the
header line highlighted.
4. Now drag the mouse completely off the highlighted portion of the
header line and directly onto the tool bar: the highlighting in the
header line remains.  As soon as the mouse pointer leaves the tool
bar, the header line highlighting vanishes.

I only observe this with the tool bar enabled.  I also see it with the
mode line in the GTK build when the tool bar is detached and dragged
down so that it abuts the mode line.


In GNU Emacs 22.0.50.8 (i686-pc-linux-gnu, GTK+ Version 2.8.7)
 of 2006-01-05 on escher
X server distributor `The X.Org Foundation', version 11.0.60802000
configured using `configure '--with-x-toolkit=gtk''

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: en_US.UTF-8
  locale-coding-system: utf-8
  default-enable-multibyte-characters: t

Major mode: Group

Minor modes in effect:
  gnus-topic-mode: t
  gnus-undo-mode: t
  tabbar-mwheel-mode: t
  tabbar-mode: t
  recentf-mode: t
  show-paren-mode: t
  display-time-mode: t
  tooltip-mode: t
  auto-compression-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: identity

Recent input:
n n n n n <f1> <down> SPC n n <f1> <down> <down> <down> 
<down> <down> d <f1> <home> <f12> C-s i n f o C-s C-s 
C-g C-g C-x C-b <select-window> <help-echo> <help-echo> 
<help-echo> <help-echo> <select-window> <select-window> 
<f1> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <S-right> <S-up> <S-left> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <down-mouse-1> <mouse-1> q 
C-x k <return> q q M-x r e p o r <tab> b <tab> <backspace> 
<backspace> <backspace> <tab> b <tab> <return>

Recent messages:
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