Firefox shows some websites "twice"

[Jacob Kiers]

Binary package hint: firefox-3.0

With some websites (at least on FreeBSD.org and www.ucommand.com), firefox shows the website twice, vertically. In such a case, the whole page is repeated. Also, if you click on something in the upper part, the click is registered in the lower part. For example, if I click on the Get FreeBSD Now! button in the upper part of the screen, I actually see the click being registered at the lower part, i.e. I see the button in the lower part get focus.

This also happens on the uCommand website after login (so you probably won't be able to see that).

General info:
Ubuntu release: 9.04
Firefox version: 3.0.10+nobinonly-0ubuntu0.9.04.1
Uname output: Linux laptop-jacob 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:58:03 UTC 2009 x86_64 GNU/Linux

Attachment: screenshot of FreeBSD website.

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: nvidia
Package: firefox 3.0.10+nobinonly-0ubuntu0.9.04.1
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox-3.0
Uname: Linux 2.6.28-11-generic x86_64

[Jacob Kiers (jacobkiers)]

I'm not sure, but I think it was a temporary issue, due to the following:

After posting, I noticed I forgot to try this in safe mode also. In safe mode it all worked okay. So I started FF for the 2nd time in safe mode, and reset the add-ons and the tool bars to their defaults. Then, I started FF again (not in safe mode). I re-enabled these add-ons part by part to be able to track down whether it was one of these which caused the error. After re-enabling all add-ons and setting all tool bars as was the case when I posted this report, that website still worked well.

My conclusion: something changed in between. Disabling and re-enabling the addons solved the problem, so my guess is it IS a problem in one of these, although I wasn't able to track it down.

Any ideas on how to proceed now?

[Thomas Kluyver (takluyver)]

Sounds like it was most likely an addon issue. If it doesn't happen consistently, it will be quite hard to track down. I'm going to set it as incomplete, as it's probably not actually in Firefox. It will change to invalid automatically in 60 days. I suggest that you post the full list of extensions you had installed when the problem happened, so that anyone else who spots it can cross check their own extensions.

[Jacob Kiers (jacobkiers)]

Yeah, personally, I was thinking along those lines also. However, I wasn't sure. Reporting bugs is not something I do daily ;-). Additionally, by posting the list of extensions, someone who also has this problem probably has some other set of extensions, thereby narrowing the list of possible candidates.

List of addons:
- Adblock Plus
- Beagle Indexer
- Delicious Bookmarks
- DOM Inspector
- ElasticFox
- Firebug
- Firecookie
- Google Gears
- Greasemonkey
- Keyconfig
- Novell Moonlight
- Rightbar
- S3Fox
- Ubiquity
- Ubuntu Firefox Modifications
- User Agent Switcher
- Vimperator
- Web Developer
- YSlow

I might be able to cross-check this list on a known working Windows Firefox, however, I'm not sure whether that is useful, for that's a completely different platform. Could someone tell me whether that is useful or not? Thanks!

[Vish (vish)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue for you. Can you try with the latest Ubuntu release? Thanks in advance.

[Launchpad Janitor (janitor)]

[Expired for firefox-3.0 (Ubuntu) because there has been no activity for 60 days.]