You asked, we built it: Firefox tab groups are here  | The Mozilla Blog
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What happens when 4,500 people ask for the same feature? At Firefox, we build it. Tab groups have long been the most requested idea on Mozilla Connect –
  • Kwdg@discuss.tchncs.de
    4·
    14 hours ago

    I either let the OS close firefox and then it opens all windows when I next start firefox. Or I use ctrl+shift+n to reopen the last closed window