Ctrl + Q inderectly conflicts with Ctrl + W which is used to close tabs, in that sense it’s easy to accidentally hit the former and kill your entire browsing session, all windows included. Navigating only with the mouse massively slows down my workflow.
There are at least the browser.sessionstore.warnOnQuit
and browser.warnOnQuit
about:config preferences, but both had no effect when set to true
on my system.