New Tab only displays the thumbnail of the first visited website of the current session despite all thumbnails being correctly generated

[Naël]

Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:16.0) Gecko/20100101 Firefox/16.0
Firefox package version: 16.0.2+build1-0ubuntu0.12.04.1

Hi,

I'm using Firefox 16.0.2 on an up-to-date Ubuntu 12.04.1 LTS, and my settings are to clear history/cache when Firefox closes. In these conditions, about:newtab is supposed to display thumbnails of the most visited websites of the current session (according to fixed bugs 744388 and 736724 in Mozilla Bugzilla).

The behavior I observe is that about:newtab only displays the thumbnail of the first visited website of the current session, in top-left position. The eight other thumbnails remain blank (no text, no image). Yet thumbnails are correctly generated and saved in the "thumbnails" directory in my profile directory.

In the attached picture, I've opened www.omgubuntu.co.uk, www.nytimes.com, boards.4chan.org/b, www.perdu.com, about:newtab in five different tabs, in that order, in a new session, with all addons/plugins/language packs deactivated. I've waited for each webpage to load completely before opening the next one. None of these websites uses HTTPS or Cache-Control: no-store/no-cache.

Only the first visited website gets a thumbnail in about:newtab, despite thumbnails for all websites appearing in the "thumbnails" directory. The same behavior occurs when starting Firefox in Safe Mode.

Can anybody reproduce this behavior? What additional info could I provide for it to be triaged and fixed? Should I report it upstream?

https://bugzilla.mozilla.org/show_bug.cgi?id=744388
https://bugzilla.mozilla.org/show_bug.cgi?id=736724

[Naël (nathanael-naeri)]

Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:17.0) Gecko/17.0 Firefox/17.0

Got Firefox 17 in the updates today. This bug is present.

[Naël (nathanael-naeri)]

Created attachment 684996
Screenshot of the reported behavior

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:11.0) Gecko/20100101 Firefox/11.0
Build ID: 20120310193349

Steps to reproduce:

Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:17.0) Gecko/17.0 Firefox/17.0

Hi,

I'm using Firefox 17.0 on an up-to-date Ubuntu 12.04.1 LTS, and my settings are to clear history/cache when Firefox closes. In these conditions, about:newtab is supposed to display thumbnails of the most visited websites of the current session (according to fixed bugs 744388 and 736724).

The behavior I observe is that about:newtab only displays the thumbnail of the first visited website of the current session, in top-left position. The eight other thumbnails remain blank (no text, no image). Yet thumbnails are correctly generated and saved in the "thumbnails" directory in my profile directory.

In the attached picture, I've opened www.omgubuntu.co.uk, www.nytimes.com, boards.4chan.org/b, www.perdu.com, about:newtab in five different tabs, in that order, in a new session, with all addons/plugins/language packs deactivated. I've waited for each webpage to load completely before opening the next one. None of these websites uses HTTPS or Cache-Control: no-store/no-cache.

Actual results:

Only the first visited website gets a thumbnail in about:newtab, despite thumbnails for all websites appearing in the "thumbnails" directory. The same behavior occurs when starting Firefox in Safe Mode.

Expected results:

Unless I am mistaken, about:newtab should display thumbnails for the four visited websites, not just the first one.

What can I do to help troubleshoot this behavior? I reported this bug on Launchpad against Ubuntu's firefox package (https://bugs.launchpad.net/bugs/1081123), but it doesn't get much attention there.

[Naël (nathanael-naeri)]

Damn, please discard:

> User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:11.0) Gecko/20100101 Firefox/11.0
> Build ID: 20120310193349

Wrong computer. I'm talking about another computer, with:

> Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:17.0) Gecko/17.0 Firefox/17.0

I knew I should have used the unsimplified bug report form. Also, changing component to Tabbed Browser.

[Naël (nathanael-naeri)]

Bug reported upstream in case someone wants to investigate.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Naël (nathanael-naeri)]

This bug is still present in Firefox 17.0.1. I have no idea why it has been marked Invalid in Firefox's Bugzilla. I have also no idea what I could do to help troubleshoot it.

Could the other person affected by this bug also report it upstream in Firefox's Bugzilla bug report (link above)? Thanks.

[Naël (nathanael-naeri)]

This bug is still present in Firefox 17.0.1 [Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:17.0) Gecko/20100101 Firefox/17.0]. I have no idea why it has been marked Invalid. Curtis, could you please elaborate? What can I do to help troubleshoot this problem?

[Naël (nathanael-naeri)]

I've changed the status of this old bug to Fix Released because I can't reproduce it in the current version of Firefox (34.0). It was probably unknowingly fixed at some point during the two years since it was reported on Firefox 16.0 and 17.0. A lot of code changes in two years.