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I can't select tabs, or move them, on the tab bar. I have to use list tab and tab groups to do these tasks. What did I screw up?

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I can't click on a tab to select it or move it. I have to use the tab list and group to do this.

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Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.9 r900
  • Next Generation Java Plug-in 10.45.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy

Application

  • Firefox 28.0a1
  • User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:28.0) Gecko/20100101 Firefox/28.0
  • Support URL: https://support.mozilla.org/1/firefox/28.0a1/WINNT/en-US/

Extensions

  • LastPass 3.0.12 (support@lastpass.com)
  • Nightly Tester Tools 3.7 ({8620c15f-30dc-4dba-a131-7c5d20cf4a29})
  • Restart 0.0.0.10m (Restart@schuzak.jp)
  • SaveFrom.net helper 2.23 (helper@savefrom.net)
  • Session Manager 0.8.0.8 ({1280606b-2510-4fe0-97ef-9b5a22eafe30})
  • Tab Mix Plus 0.4.1.2.02 ({dc572301-7619-498c-a57d-39143191b318})
  • Troubleshooter 1.1a (troubleshooter@mozilla.org)
  • Xmarks 4.2.3 (foxmarks@kei.com)

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription: NVIDIA GeForce 9800 GTX/9800 GTX+
  • adapterDescription2:
  • adapterDeviceID: 0x0612
  • adapterDeviceID2:
  • adapterDrivers: nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
  • adapterDrivers2:
  • adapterRAM: 512
  • adapterRAM2:
  • adapterVendorID: 0x10de
  • adapterVendorID2:
  • clearTypeParameters: Gamma: 2100 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 50
  • direct2DEnabled: True
  • directWriteEnabled: True
  • directWriteVersion: 6.2.9200.16571
  • driverDate: 1-18-2013
  • driverDate2:
  • driverVersion: 9.18.13.1106
  • driverVersion2:
  • info: {u'AzureCanvasBackend': u'direct2d', u'AzureFallbackCanvasBackend': u'cairo', u'AzureContentBackend': u'direct2d', u'AzureSkiaAccelerated': 0}
  • isGPU2Active: False
  • numAcceleratedWindows: 1
  • numTotalWindows: 1
  • webglRenderer: Google Inc. -- ANGLE (NVIDIA GeForce 9800 GTX/9800 GTX+ Direct3D9Ex vs_3_0 ps_3_0)
  • windowLayerManagerRemote: False
  • windowLayerManagerType: Direct3D 10

Modified Preferences

  • accessibility.typeaheadfind.flashBar: 0
  • browser.cache.disk.capacity: 358400
  • browser.cache.disk.smart_size.first_run: False
  • browser.cache.disk.smart_size.use_old_max: False
  • browser.cache.disk.smart_size_cached_value: 358400
  • browser.link.open_newwindow.override.external: 3
  • browser.link.open_newwindow.restriction: 0
  • browser.places.smartBookmarksVersion: 5
  • browser.search.openintab: True
  • browser.search.useDBForOrder: True
  • browser.sessionstore.max_tabs_undo: 20
  • browser.sessionstore.max_windows_undo: 10
  • browser.sessionstore.restore_hidden_tabs: True
  • browser.sessionstore.upgradeBackup.latestBuildID: 20131203030202
  • browser.startup.homepage: http://isearch.avg.com?pid=avg&sg=0&cid=%7Ba2669577-ceda-44a0-b8ef-f1e97b692ce5%7D&mid=c49bc0853023cf81f81d93526fe24eed-c6ab6aa7eeda8222c2cb3c2c2a2ed13f011447f1&ds=AVG&v=15.3.0.11&lang=en&pr=pr&d=2013-07-08%2000%3A27%3A58&sap=hp
  • browser.startup.homepage_override.buildID: 20131203030202
  • browser.startup.homepage_override.mstone: 28.0a1
  • browser.tabs.closeWindowWithLastTab: False
  • browser.tabs.insertRelatedAfterCurrent: False
  • browser.tabs.loadInBackground: False
  • browser.tabs.selectOwnerOnClose: False
  • browser.tabs.warnOnClose: False
  • dom.mozApps.used: True
  • extensions.lastAppVersion: 28.0a1
  • font.internaluseonly.changed: True
  • gfx.direct3d.last_used_feature_level_idx: 1
  • network.cookie.prefsMigrated: True
  • network.http.max-persistent-connections-per-server: 4
  • places.database.lastMaintenance: 1386090182
  • places.history.expiration.transient_current_max_pages: 104858
  • plugin.disable_full_page_plugin_for_types: application/pdf,audio/webm
  • plugin.importedState: True
  • plugin.state.java: 2
  • plugin.state.npctrl: 2
  • plugin.state.npgeplugin: 0
  • plugin.state.npwatweb: 2
  • privacy.donottrackheader.enabled: True
  • privacy.sanitize.migrateFx3Prefs: True
  • storage.vacuum.last.index: 1
  • storage.vacuum.last.places.sqlite: 1383698024

Misc

  • User JS: Yes
  • Accessibility: No
Waka_Flocka_Flame
  • Top 25 Contributor
529 solutions 5045 answers

Helpful Reply

Note that Nightly is unstable, if you havent already noticed. You can try safe mode as a good first step to see if addons are the problem.

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cor-el
  • Top 10 Contributor
  • Moderator
10762 solutions 96861 answers

You should always have a Firefox release version as a fallback installed, so you can switch to that version.
Also make sure to use each Firefox version with its own profile (i.e. do not use the Nightly build with the same profile as other installed versions).
With the Australis code landing on mozilla-central anything can go wrong and you should be prepared for issues.
Best is always to first try a new test profile.

See "Creating a profile":

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jscher2000
  • Top 10 Contributor
2368 solutions 20966 answers

Helpful Reply

I noticed you have the Tab Mix Plus extension installed. You might try testing with Tab Mix Plus disabled in case it is incompatible with a change in Firefox 28.

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Question owner

Thanks all, it was Tab Mix Plus. After posting the question, I realized that I hadn't tried disabling add-ons, and when I did, Tab Mix Plus was the culprit. I still have Firefox installed, but I didn't know about the separate profiles, an omission which I will remedy. I needed Nightly, because I'm running 64 bit Java for Minecraft. Thanks for the help.

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