I have a mouse combo to close tabs. Right-click + left-click, and if the last tab is open, it will close the browser. In settings, this is turned off. I have multiple windows open, and it will close them all. Extremely annoying.
My payment info is empty, my credit card info is empty. It asks to log in to every site even though I just logged in a session before.
So something is broken with closing tabs, which crashes and deletes some data.