I had the Primary password set. Today I restarted Firefox to install some updates (not sure if that's relevant), and when I opened Firefox again, I expected to enter my primary password for sync, but nothing showed up. I thought it was some bug after update or something, so I closed and reopened Firefox, but no dialog box came out. So I went to passwords section and tried to view one password, which should prompt me to enter my primary password, but it just showed the password to me without asking for my primary. This is where I got quite scared. I went to my settings and I found out that my primary password is just... not set. I did not remove it, I never told it to anyone, I didn't give anyone a chance to extract it. But it is just not there. What the hell is going on? I couldn't find any answer to this, anywhere. Is there some option to see how/when was my primary password removed? Some logs?