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How do I tell FiIrefox to only restore a sesson of more than one tab, and disregard the restore of a single tab session (ie. closing the browser)

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I am on the beta channel of Firefox (currently 17.0, by the about window) and I cannot seem to find a way to limit the size of a browsing session that is automatically restored when re-opening the browser. In the past, Firefox would only save sessions of more than one tab when closing the entire application, and ask me about restoring said session when restarted. Now, Firefox seems to treat a session of just a single tab the same, which is a preference I dislike, given that I use a blank start page to great effect.

I am using a number of addons, including Tab Mix Plus, which specifically modifies tab behavior (although I have it configured to use Firefox's default session manager), but the problem persists even with all addons disabled.

I cannot seem to find an option in about:config to change this behavior. Is this a permanent change within Firefox, and if so, is there or will there be an option to specify the number of tabs that constitute a session that will be automatically saved?

I am on the beta channel of Firefox (currently 17.0, by the about window) and I cannot seem to find a way to limit the size of a browsing session that is automatically restored when re-opening the browser. In the past, Firefox would only save sessions of more than one tab when closing the entire application, and ask me about restoring said session when restarted. Now, Firefox seems to treat a session of just a single tab the same, which is a preference I dislike, given that I use a blank start page to great effect. I am using a number of addons, including Tab Mix Plus, which specifically modifies tab behavior (although I have it configured to use Firefox's default session manager), but the problem persists even with all addons disabled. I cannot seem to find an option in about:config to change this behavior. Is this a permanent change within Firefox, and if so, is there or will there be an option to specify the number of tabs that constitute a session that will be automatically saved?

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.5 r502
  • 5.1.10411.0

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/17.0 Firefox/17.0

More Information

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cor-el
  • Top 10 Contributor
  • Moderator
17470 solutions 157890 answers

Make sure that Firefox closes properly to prevent session restore from restoring a crashed session.

Use "Firefox/File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit") to close Firefox if you are currently doing that by clicking the close X on the title bar.

Make sure that Firefox closes properly to prevent session restore from restoring a crashed session. *"Hang at exit": http://kb.mozillazine.org/Firefox_hangs *"Firefox hangs when you quit it": https://support.mozilla.org/kb/Firefox+hangs Use "Firefox/File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit") to close Firefox if you are currently doing that by clicking the close X on the title bar.