Anytime I close out Firebox all my tabs and history are gone. Even if I make tabs it keep being deleted. This happen recently after I sync with my steam deck. I didn't touch my setting recently, Firefox should auto-update so it good, and my account is safe. I don't know what is happening that can caused this bug and only thing that I find is weird is having two same account on my deck and not my pc. Only thing I can think to fix is to uninstall Firefox which I will try later.