Jean-Yves Avenard [:jya] Reporter
	Description • 6 years ago

In my preferences, I have Firefox configured to always restore the last session.

However, many times, when firefox re-open (usually following a crash of my computer or a hard reset where firefox wasn't cleanly exited) it starts on a blank page.

I have to go to the menu and manually select "Restore Previous Session" which will restore all tabs and windows as they were.

So obviously, all the information that a previous session existed and what to restore is there.

So why not always restore the last session if firefox is configured to do so?

	Dale Harvey (:daleharvey)
	Comment 1 • 6 years ago

Are you using the tree style tabs extension? (see https://bugzilla.mozilla.org/show_bug.cgi?id=1464685) 

We would definitely need more information in order to debug anything here, is the filing of https://bugzilla.mozilla.org/show_bug.cgi?id=1464087 related?

	Jean-Yves Avenard [:jya] Reporter
	Comment 2 • 6 years ago

I'm not using any particular extension...

i'm not sure it's related... I see that message even if I'm offered to restore (the restore option is provided on the blank page)

	Mike de Boer [:mikedeboer]
	Comment 3 • 6 years ago

Well, after a crash, we still show 'about:sessionrestore' first - because it has the feature to deselect a tab that was causing the browser to crash. But perhaps, in the e10s world, that doesn't really matter anymore since it'd only crash the content process.
This could mean I'd take this bug as a feature request to simply bypass the 'have we crashed' check when Firefox is configured to always restore the session.

How does that sound?