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"Warn on close" for multiple tabs no longer works in 63.0.3, Firefox just quits without asking

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I'm running 63.0.3 on OS X and just noticed that if I quit (either with command-Q or Firefox->Quit) it will just quit out automatically and not prompt a warning. I've double checked all "warn on close" settings through about:settings, tried toggling them, got the "Warn on close" setting to show up in the security preferences panel and toggled it there - nada. Multiple windows, same thing. Am I alone in this?

I also noticed recently that on Firefox across devices that my "restore previous session" setting was toggled off on upgrade, but at least that is fixed by reenabling it.

I'm running 63.0.3 on OS X and just noticed that if I quit (either with command-Q or Firefox->Quit) it will just quit out automatically and not prompt a warning. I've double checked all "warn on close" settings through about:settings, tried toggling them, got the "Warn on close" setting to show up in the security preferences panel and toggled it there - nada. Multiple windows, same thing. Am I alone in this? I also noticed recently that on Firefox across devices that my "restore previous session" setting was toggled off on upgrade, but at least that is fixed by reenabling it.

Chosen solution

Soon after I posted this I found this Reddit thread: https://www.reddit.com/r/firefox/comments/9rt1kn/how_to_get_a_warning_when_closing_firefox_and/

And this bug: https://bugzilla.mozilla.org/show_bug.cgi?id=550559

So I think it's being looked into. I found the "disable cmd-q" plug-in linked to in the reddit thread very helpful as a workaround.

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Chosen Solution

Soon after I posted this I found this Reddit thread: https://www.reddit.com/r/firefox/comments/9rt1kn/how_to_get_a_warning_when_closing_firefox_and/

And this bug: https://bugzilla.mozilla.org/show_bug.cgi?id=550559

So I think it's being looked into. I found the "disable cmd-q" plug-in linked to in the reddit thread very helpful as a workaround.