[Bug 797674] [NEW] Serious rendering issues with some Wikipedia pages, among other

[Martin Wikström]

Public bug reported:

Binary package hint: firefox

Problem:
Several Wikipedia pages are displayed incorrectly in Firefox4: Large empty space with long scrollbar. Main content visible at the bottom of the page but some content missing completely. DOCTYPE and HTML comments are invisible when selecting View Source when Syntax highlighting is turned on.

Steps to recreate:
To test I installed Kubuntu 11.04 in a virtual machine (Virtualbox). After install:
apt-get update; apt-get upgrade; apt-get install firefox
And turned off Desktop effects.
Visited wikipedia article: http://en.wikipedia.org/wiki/Cambodia
Clicked "Discussion" and then "Article" and the bug was present.

Package and OS info:
Kubuntu 11.04
$ apt-cache policy firefox
firefox:
  Installed: 4.0.1+build1+nobinonly-0ubuntu0.11.04.3
  Candidate: 4.0.1+build1+nobinonly-0ubuntu0.11.04.3
  Version table:
 *** 4.0.1+build1+nobinonly-0ubuntu0.11.04.3 0
        500 http://fi.archive.ubuntu.com/ubuntu/ natty-updates/main i386 Packages
        100 /var/lib/dpkg/status
     4.0.1+build1+nobinonly-0ubuntu0.11.04.1 0
        500 http://security.ubuntu.com/ubuntu/ natty-security/main i386 Packages
     4.0+nobinonly-0ubuntu3 0
        500 http://fi.archive.ubuntu.com/ubuntu/ natty/main i386 Packages

Screenshots:
http://www.waxjism.org/nail/nailblog.php?act=file_view&path=/images/screendumps/&id=166
http://www.waxjism.org/nail/nailblog.php?act=file_view&path=/images/screendumps/&id=167
http://www.waxjism.org/nail/nailblog.php?act=file_view&path=/images/screendumps/&id=168
http://www.waxjism.org/nail/nailblog.php?act=file_view&path=/images/screendumps/&id=169

Notes:
The firefox on the Kubuntu 11.04 live-dvd did not seem to have these problems.
Running firefox in safe-mode does not help.
On one page all text with <i>tags</i> invisible and sometimes, but not always, produced the long scrollbar.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: firefox 4.0.1+build1+nobinonly-0ubuntu0.11.04.3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Wed Jun 15 14:46:02 2011
FirefoxPackages:
 firefox 4.0.1+build1+nobinonly-0ubuntu0.11.04.3
 flashplugin-installer 10.3.181.22ubuntu0.11.04.1
 adobe-flashplugin N/A
 icedtea-plugin N/A
InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcEnviron:
 LANGUAGE=
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 natty

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Title:
  Serious rendering issues with some Wikipedia pages, among other

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