`append-to-buffer' does not preserve order of appended text if target buffer is displayed

[Jens Schmidt]

This bug report will be sent to the Free Software Foundation,
 not to your local site managers!!
Please write in English, because the Emacs maintainers do not have
translators to read other languages for them.

In GNU Emacs 20.7.1 (i386-*-nt4.0.1381)
 of Tue Jun 13 2000 on buffy
configured using `configure NT'

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

After starting a fresh emacs with emacs -q, I execute the recent
input as displayed below (appending two subsequent paragraphs of
the GNU manifesto to *scratch*).  The resulting *scratch* buffer
looks like that:

---*scratch*---
This buffer is for notes you don't want to save, and for Lisp evaluation.
If you want to create a file, visit that file with C-x C-f,
then enter the text in that file's own buffer.

   Permission is granted to anyone to make or distribute verbatim copies
of this document, in any medium, provided that the copyright notice and
permission notice are preserved, and that the distributor grants the
recipient permission for further redistribution as permitted by this
notice.

Copyright (C) 1985, 1993 Free Software Foundation, Inc.
---*scratch*---

If the *scratch* buffer is not displayed when doing the
`append-to-file', the result looks as expected:

---*scratch*---
This buffer is for notes you don't want to save, and for Lisp evaluation.
If you want to create a file, visit that file with C-x C-f,
then enter the text in that file's own buffer.

Copyright (C) 1985, 1993 Free Software Foundation, Inc.

   Permission is granted to anyone to make or distribute verbatim copies
of this document, in any medium, provided that the copyright notice and
permission notice are preserved, and that the distributor grants the
recipient permission for further redistribution as permitted by this
notice.
---*scratch*---


Recent input:
C-h C-p C-x 4 b return C-x o C-SPC down down M-x a 
p p e n d - t o - b tab return return C-SPC down down 
down down down down M-x M-p return return M-x r e p 
o r t - e m tab return

Recent messages:
(c:\usr\emacs\emacs-20.7\bin\emacs.exe -q)
For information about the GNU Project and its goals, type C-h C-p.
Note: file is write protected
Mark set [2 times]
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