Hey there, Since upgrading to Firefox v100 a few weeks ago I've had incessant problems every time I reboot my laptop. If I leave Firefox running (i.e. I just hit shutdown and let it sort itself out) then next time I boot up, and I try to open Firefox for it to load my prior session, it spawns a new window and just gets stuck forever. If I close Firefox before shutting down, however, it reloads itself just fine. This has led to several lost sessions and having to restore using sessionstore, either when laptop has died or I've just shut the laptop down without thinking about it. I run Kubuntu 20.04. Thanks Chris