448947 - scrolling certain webpage gets corrupted below a point

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[Paweł Hajdan jr (ph)]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1a2pre) Gecko/2008080102 Minefield/3.1a2pre
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1a2pre) Gecko/2008080102 Minefield/3.1a2pre

I visited the webpage in URL, and started scrolling it down to see rest of content. I started to see visual corruption - page was unreadable, and looked like repeated artifacts taken from this page, or pages opened in other tabs (refreshing the page changed the "patterns", but not overall behavior).

Reproducible: Always

Steps to Reproduce:
1. Visit http://phrogz.net/ProgrammingRuby/taint.html
2. Start scrolling down
Actual Results:  
Corruption can be seen

Expected Results:  
Webpage gets scrolled normally

I'm using Xorg "nv" driver. I also tried turning on the "smooth scrolling" option. The corruption was still there, but with different pattern. The whole thing is on Gentoo Linux.

Comment 1

[Paweł Hajdan jr (ph)]

Attachment: no smooth scrolling, example 1

Comment 2

[Paweł Hajdan jr (ph)]

Attachment: no smooth scrolling, example 2

Comment 3

[Paweł Hajdan jr (ph)]

Attachment: smooth scrolling on

Comment 4

[Paweł Hajdan jr (ph)]

Oh, another comment: with smooth scrolling off, if I scroll down and refresh the page (F5 or toolbar button), the displayed part of the page is shown normally, no corruption. Scrolling makes it corrupted again. This does not hold however for smooth scrolling on.

Comment 5

[Paweł Hajdan jr (ph)]

The problem also occurs with Xorg "vesa" driver.

Comment 6

[Ria Klaassen (not reading all bugmail)]

Probably Linux only; I can't reproduce the problem on Windows XP.

Comment 7

[Paweł Hajdan jr (ph)]

Attachment: bug448947-testcase.html

This is a minimal testcase i managed to produce. It has a long list of <p> elements with same contents (lorem ipsum). Problem manifests when scrolling to the bottom of the page.

Comment 8

[Paweł Hajdan jr (ph)]

Seems to be fixed in Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1b1pre) Gecko/20080904020553 Minefield/3.1b1pre

Comment 9

[niackho]

I have a similar problem with this site :
http://www.air-defense.net/Forum_AD/index.php?topic=11015.1740

Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1a2) Gecko/20080829071937 Shiretoko/3.1a2

But it seems to be fixed in Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1b1pre) Gecko/20080908054322 Minefield/3.1b1pre

(tested under Ubuntu 8.04 with vesa driver and 177.70 beta from nvidia)

Comment 10

[Tyler Downer [He/Him]]

This is a mass search for bugs which are in the Firefox General component, are
UNCO, have not been changed for 500 days and have an unspecified version. 

Reporter, can you please update to Firefox 3.6.10 or later, create a fresh profile, http://support.mozilla.com/en-US/kb/managing+profiles, and test again. If you still see the issue, please update this bug. If the issue is gone, please set the status to RESOLVED > WORKSFORME.

Comment 11

[Tyler Downer [He/Him]]

No reply from reporter, INCOMPLETE. Please retest with Firefox 3.6.12 or later and a new profile (http://support.mozilla.com/kb/Managing+profiles). If you continue to see this issue with the newest firefox and a new profile, then please comment on this bug.