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It's Question 920279 again. Missing tabs when there's more than one window. I have v 15.0.1

Posted

When I have more than one Firefox window (I haven't tried this with only one) the tab at the left disappears. I can get to it by CTRL-TAB but it's not shown on the tab bar. Also the [+] button to open a new tab is at the left in one window, at the right in another, and part way along in another.

This is a known bug because it's described in Q 920279, but that thread is closed.

Additional System Details

Installed Plug-ins

  • Google Update
  • Shockwave Flash 11.4 r402
  • Next Generation Java Plug-in 10.7.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • RealJukebox Netscape Plugin
  • RealNetworks(tm) RealPlayer Chrome Background Extension Plug-In
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealPlayer Download Plugin
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.4
  • Yahoo Application State Plugin version 1.0.0.7
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers

Application

  • User Agent: Mozilla/5.0 (Windows NT 5.2; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1

More Information

Application Basics
Name
Firefox
Version
15.0.1
User Agent
Mozilla/5.0 (Windows NT 5.2; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1
Profile Folder
Show Folder
Enabled Plugins
about:plugins
Build Configuration
about:buildconfig
Crash Reports
about:crashes
Memory Use
about:memory
Extensions
Name
Version
Enabled
ID
Adblock Plus
2.1.2
true
{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}
DoNotTrackPlus
2.2.1.829
true
donottrackplus@abine.com
Flashblock
1.5.15.1
true
{3d7eb24f-2740-49df-8937-200b1cc08f8a}
RealPlayer Browser Record Plugin
15.0.6
true
{0153E448-190B-4987-BDE1-F256CADA672F}
Social Fixer
6.603
true
betterfacebook@mattkruse.com
Microsoft .NET Framework Assistant
0.0.0
false
{20a82645-c095-46ed-80e3-08825760534b}
Important Modified Preferences
Name
Value
accessibility.typeaheadfind.flashBar
0
browser.cache.disk.capacity
1048576
browser.cache.disk.smart_size.first_run
false
browser.cache.disk.smart_size_cached_value
1048576
browser.places.smartBookmarksVersion
4
browser.startup.homepage
www.google.com
browser.startup.homepage_override.buildID
20120905151427
browser.startup.homepage_override.mstone
15.0.1
browser.tabs.loadInBackground
false
extensions.lastAppVersion
15.0.1
network.cookie.prefsMigrated
true
places.database.lastMaintenance
1348075904
places.history.expiration.transient_current_max_pages
104858
privacy.donottrackheader.enabled
true
privacy.sanitize.migrateFx3Prefs
true
security.warn_viewing_mixed
false
Graphics
Adapter Description
ATI Radeon HD 4250
Vendor ID
0x1002
Device ID
0x9715
Adapter RAM
Unknown
Adapter Drivers
ati2dvag
Driver Version
8.710.0.0
Driver Date
2-10-2010
WebGL Renderer
Blocked for your graphics driver version. Try updating your graphics driver to version 10.6 or newer.
GPU Accelerated Windows
0. Blocked for your graphics driver version. Try updating your graphics driver to version 10.6 or newer.
JavaScript
Incremental GC
0
Library Versions
Expected minimum version
Version in use
NSPR
4.9.1
4.9.1
NSS
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC
NSS Util
3.13.6.0
3.13.6.0
NSS SSL
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC
NSS S/MIME
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC

Michael Verdi
  • Administrator
  • Moderator
107 solutions 739 answers

It sounds like you have the "Always show the tab bar" preference unchecked. To change that go to:

  1. Click on the Firefox button and then select Options
  2. In the Options window, select the "Tabs" panel
  3. Check the box next to "Always show the tab bar"

Question owner

"Tools" | "Options" | "Tabs" "Always show the tab bar" was checked - uncheck it. (Restart Firefox and confirm settings.)

First PC Window 1: [+] at far right - all tabs visible. Window 2: [+] at far left - one tab missing. Window 3: [+] at far left - one tab missing.

Second PC Window 1: [+] at far right - all tabs visible. Window 2: [+] at far left - one tab missing.

Sorry - I don't think it made any difference. There is a pattern here, and I do have "Show my windows and tabs from last time" selected. I think opening an empty Firefox and adding tabs manually is OK.

cor-el
  • Top 10 Contributor
  • Moderator
10755 solutions 96800 answers

Try to create a new profile.
That is the only solution that has worked for me as I didn't manage to fix it in the profile and I couldn't identify the cause.

See "Creating a profile":

There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins" in case there are still problems.

If the new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.

See:

You can also try to reset Firefox:

Question owner

This is beginning to sound like some of the anti-depressants I've taken - the solution is worse than the problem. It's going to need small changes, then open more than one window with more than one tab each, then restart. I'll take it slowly.