UPDATE

It turns out I didn’t lose all logins in Firefox, just a couple of major ones. It was very surprising. And this was after losing all in LibreWolf, so I thought it was all in Firefox, too. My bad.

As pointed out in the comments, LibreWolf is basically “Private Browsing Mode” by default. I did not know that. I turned that off, re-copied my profile, and I’m good to go.

Original Post

I just installed Librewolf (Flatpak) the other day, here’s the sequence of events:

  1. Install Librewolf
  2. Run it once and close it.
  3. Copy the contents of my profile folder from Firefox to my new profile folder in Librewolf after deleting its default contents.
  4. Run Liberwolf and see that everything is good: bookmarks, logins, extensions, etc.

The next day I run Liberwolf and notice I’m logged out of every website that I normally keep logged in. I figured I probably failed to change some default privacy setting in the new browser and it wiped my logins.

So I open Firefox and I’m logged out of every website there, too! I still have all my bookmarks and such, so I know I didnt move my profile contents by accident.

What in the world happened? Why did I suddenly get logged out of everything in both browsers?

OpenSUSE Tumbleweed with btrfs.