Found this reference to the bug on mozilla support site: https://support.mozilla.org/en-US/questions/939101
In short, it is a confirmed bug for Firefox 16 and is confirmed to be fixed in Firefox 18. Do I need to revert to Firefox 15 to address the bug? This one is "really annoying", especially as I don't see a manual hack to fix it in Firefox 16. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1064985 Title: Firefox 16. Warning about close multiple tabs is always on Status in “firefox” package in Ubuntu: Invalid Bug description: env LANG=en_US.UTF-8 apt-cache policy firefox firefox: Installed: 16.0+build1-0ubuntu0.12.04.1 Candidate: 16.0+build1-0ubuntu0.12.04.1 Version table: *** 16.0+build1-0ubuntu0.12.04.1 0 500 http://archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages 500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages 100 /var/lib/dpkg/status 11.0+build1-0ubuntu4 0 500 http://archive.ubuntu.com/ubuntu/ precise/main amd64 Packages steps: disable browser.tabs.warnOnOpen in config opened 3 or more tabs. right clicked a tab. choose "close other tabs" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1064985/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp