Lately firefox have been buggy and have closed all my tabs, or so I tought, but after using task manager I see it's up an running, but if I just use the firefox button a new windows open, but if I right-click and tells it to open av often used site, it pops up with all my saved tabs. I've tried using the exit button in the menu, but it makes no difference. I've tried fixing it a few times via the installer, havent uninstalled it yet as I have to be in the office to do a complete re-install. But the funny thing after the lastest update is that is I open firefox, my teams app go down, and if I open teams, Firefox goes down... I've tried using safe mode in firefox, but it made no difference.