206677 - scrolled page size with "page up/down" keys in position:fixed element should not be entire page

Status: RESOLVED DUPLICATE of bug 162369

(Core :: Layout: Positioned, defect)

Description

[mg8]

User-Agent:       Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.4a) Gecko/20030401
Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.4a) Gecko/20030401

On the given testpage, a menu at the top of the page is realized using a
position:fixed <DIV> element. When you scroll down the page with the "Page down"
key (or scroll it up with the "Page up" key), I expected that the size of the
scrolled area should only be the size of the section of the page that is not
located in the position:fixed <DIV> element. Instead, Mozilla scrolls the area
of the entire page so that a part of it is covered by the position:fixed <DIV> area.

The test page continues a numbered list that shows the problem immediately (see
the "how to reproduce" list).

Reproducible: Always

Steps to Reproduce:
1. open the webpage of the given example
2. remember the number at the bottom of the displayed page (for example: 5)
3. hit "page down"


Actual Results:  
The first number on the page displayed after you hit "page down" is 9.

Expected Results:  
The first number on the page displayed after you hit "page down" should have
been either 5 or 6.

Comment 1

[Boris Zbarsky [:bzbarsky]]

*** This bug has been marked as a duplicate of 162369 ***