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Session restore stopped working since last update

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No matter how I close Firefox, (X, File->Exit, Menu->Exit), if I start it again it doesn't automatically restore the previous session.

If I click on "Menu->restore previous session" it does restore it.

Of course "Restore previous session" is enabled.

Why did it stop working, what changed?

No matter how I close Firefox, (X, File->Exit, Menu->Exit), if I start it again it doesn't automatically restore the previous session. If I click on "Menu->restore previous session" it does restore it. Of course "Restore previous session" is enabled. Why did it stop working, what changed?

Chosen solution

Fixed by setting "browser.startup.page" to 3 in about:config...

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Chosen Solution

Fixed by setting "browser.startup.page" to 3 in about:config...

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Wow, if the box was checked on the Options page, that should match, so it's a surprise that you had to do it manually. But thank you for reporting back and reminding us that the Options page sometimes doesn't match the internal setting.