You asked, we built it: Firefox tab groups are here  | The Mozilla Blog
blog.mozilla.org
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
    5·
    13 days 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