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Why is interface different? Why isn't App Tabs working properly?

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I installed Mozilla Firefox 4 & the App Tabs works in regards to being able to "pin" it, but if I close my browser & re-open it, the tabs I pinned do not load. And why doesn't my browser interface look like the one shown on the "Features" page of mozilla.com? It just looks the same as the previous version.

I installed Mozilla Firefox 4 & the App Tabs works in regards to being able to "pin" it, but if I close my browser & re-open it, the tabs I pinned do not load. And why doesn't my browser interface look like the one shown on the "Features" page of mozilla.com? It just looks the same as the previous version.

Chosen solution

You see the orange (on Linux gray) Firefox button if the Menu Bar is hidden, so you need to hide the Menu bar to get the new appearance.
If you need to access the hidden Menu bar then press F10 or hold down the Alt key to make the Menu Bar appear temporarily.
You can place the Tab Bar on top.

  • View > Toolbars : [ ] Menu Bar
  • View > Toolbars : [X] Tabs on Top

App tabs and Tab Groups (Panorama) are stored as part of the session data in the file sessionstore.js in the Firefox Profile Folder

Make sure that you do not use Delete browsing, search and download history on Firefox to clear the "Browsing History" when Firefox is closed because that prevails and prevents Firefox from opening tabs from the previous session.

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Seçilmiş Həll

You see the orange (on Linux gray) Firefox button if the Menu Bar is hidden, so you need to hide the Menu bar to get the new appearance.
If you need to access the hidden Menu bar then press F10 or hold down the Alt key to make the Menu Bar appear temporarily.
You can place the Tab Bar on top.

  • View > Toolbars : [ ] Menu Bar
  • View > Toolbars : [X] Tabs on Top

App tabs and Tab Groups (Panorama) are stored as part of the session data in the file sessionstore.js in the Firefox Profile Folder

Make sure that you do not use Delete browsing, search and download history on Firefox to clear the "Browsing History" when Firefox is closed because that prevails and prevents Firefox from opening tabs from the previous session.

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thanks for the help! everything works fine now, after following your instructions.

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You're welcome

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