457493 - Page Scrolling Broken with Fixed Div

Status: RESOLVED DUPLICATE of bug 162369

(Firefox :: General, defect)

Description

[Jerry Baker]

FF 3.0.2

If a page has a fixed-position DIV at the top or bottom of the viewport, scrolling one page at a time (PgDn, SPACE, etc.) is broken. The page scrolls the length of the entire viewport, not the length of the viewport - height of fixed DIV.

Another reason frames are better than fixed DIVs.

Comment 1

[Ria Klaassen (not reading all bugmail)]

Pg up and down appears to works fine on the URL; tested on Windows XP.
Please make sure you didn't accidentally press f7, it will toggle caret browsing.

Comment 2

[Jerry Baker]

Attachment: Screenshot illustrating problem

Screens 1 and 2 are before and after PgDn. Screen three shows the area that is skipped in yellow. Caret browsing is not enabled.

Comment 3

[Jerry Baker]

The height of the skipped part is equal to the height of the image used to create the shadow effect on the fixed DIV.

Comment 4

[Ria Klaassen (not reading all bugmail)]

Then, you can make a testcase which makes the problem clear?
http://developer.mozilla.org/en/Reducing_testcases

Comment 5

[Sander]

Dupe of bug 162369 as per (for example) bug 206677.