Question

Warn me when closing multiple tabs is not checked, but I still receive the warning when closing multiple tabs

So, I see there are prior threads on the topic dating back to Firefox 16. I'm at 19 now and the check box for "Warn me when closing multiple tabs" is still non-functional, that is, it's always on, even if unchecked. Why has this not been fixed? For those looking for a solution, this works (copied from https://support.mozilla.org/en-US/kb/tab-preferences-and-settings?esab=a&as=aaq)

Warn me when closing multiple tabs: When you close a window with multiple tabs, Firefox will ask you to confirm your choice. This prevents you from accidentally closing the whole window when you intended to only close the current tab. Uncheck this option to disable this warning and have Firefox automatically close the window.

Note: This setting has no effect on the warning when closing other tabs in a window. If you want to disable the warning when closing other tabs, set a preference to false:

In the Location bar, type about:config and press Enter.

The about:config "This might void your warranty!" warning page may appear. Click I'll be careful, I promise!, to continue to the about:config page.

In the Search field box at the top, type browser.tabs.warnOnCloseOtherTabs. Double-click the browser.tabs.warnOnCloseOtherTabs preference to set its value to false.

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