@lina Thank you for giving this attention. I had this happen a bunch of times when I was trying to daily Fedora and Asahi. The entire homepage and all my bookmarks would get replaced by the default ones.

At one point, the Fedora defaults replaced my saved tabs in Firefox sync, which made me loose all my bookmarks. That made me switch away from Fedora on my desktop, and stop using Asahi on my laptop, since the ARM Firefox Flatpak wasn't available yet.

@lina I don't know exactly when this happened, but I'd put it at about late 2024 to early 2025.

Really glad to see you trying to get down to the bottom of this, since it made me turn away from Asahi, and Fedora as a whole.

@prusa Did you restore a backup?
https://support.mozilla.org/en-US/kb/recover-lost-or-missing-bookmarks

Honestly that sounds like another Firefox Sync bug, like the home page issue... but there's more issues than that.

https://www.reddit.com/r/firefox/comments/azgugt/i_lost_all_my_bookmarks_because_of_firefox_sync/

@lina I didn't know about backups back then. From what I remember, I started my desktop system up after an update, and opened Firefox.

When I opened Firefox, all my bookmarks were replaced with the default Fedora ones, and the homepage reset to the default Fedora one.

When I opened my laptop running macOS to do what I was about to do on my desktop system with Fedora, I realized that the changes from my desktop already propagated to all my devices with Firefox sync.