1584766 - Cannot Re-enable "Warn me when I attempt to close multiple tabs" Warning in FF 69.0.1

Status: RESOLVED DUPLICATE of bug 1575592

(Firefox :: Settings UI, defect)

Description

[Bill Wayson]

Attachment: ClosingMultipleTabsWarning.png

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:69.0) Gecko/20100101 Firefox/69.0

Steps to reproduce:

1. Open two or more tabs in Firefox;
2. Close Firefox;
3. Note that there is no 'closing multiple tabs' warning;
4. Search Preferences for a setting for this;
5. Note that such a setting cannot be found.

Actual results:

Firefox closes with no warning.

Expected results:

At some point, the closing multiple tabs warning ceased to be shown for me using FF 69.0.1 (the warning shown in "ClosingMultipleTabsWarning.png"). I do not remember unchecking the box in the dialog. I cannot find a setting under Preferences to re-enable this behavior. I've also searched a bit under the "about:config" settings for something related, but nothing pops out at me there. So I do not seem to be able to re-enable this warning.

I've looked a bit at bug 419009 and set "browser.sessionstore.warnOnQuit" to "true," but it enables a different dialog.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

Bugbug thinks this bug should belong to this component, but please revert this change in case of error.

Comment 2

[:Gijs (he/him)]

There is "Warn you when closing multiple tabs" under "Tabs" in the "general" pane of the preferences. It only shows up if the warning is disabled. (cf. https://imgur.com/a/cd8ktBx ). Does that help find it? If you don't see it there, can you post the contents of about:support (help > troubleshooting information, click 'copy raw data to clipboard', upload at https://bugzilla.mozilla.org/attachment.cgi?bugid=1584766&action=enter ) ?

Comment 3

[:Gijs (he/him)]

Oh, or are you closing the last Firefox window that's open, and is Firefox set up to restore your session automatically when you restart?

Comment 5

[Bill Wayson]

(In reply to :Gijs (he/him) from comment #3)

Oh, or are you closing the last Firefox window that's open, and is Firefox set up to restore your session automatically when you restart?

You figured out my problem -- thank you!. The "Restore previous session" setting was selected. I deselected it and now get the warning I was looking for. In answer to your other question here and in the previous comment (#2), no, I was closing the whole Firefox browser with multiple and only one tab open. And, I did not have a "Warn you when closing multiple tabs" under "Tabs" in the "general" pane of the preferences. Your following sentence does explain why I did not see that setting in FF under openSUSE Leap 15.1, where I did and do get the warning.

Unless I've brought up another issue, I thing this report can be closed as resolved. Thanks, Jared, for all you do to keep FF running.