For a few months now, i.e. the last few upgrades, my Android bookmarks don't sync to my desktop bookmarks. The Android bookmarks should be in alphabetical order (as on the desktop), but it seems if I bookmark a website on Android, this goes to the top of the order on the phone. The desktop bookmarks are unaffected: the new Android bookmark is in the right place. If I uninstall Firefox and reinstall, the bookmarks sync correctly - until I bookmark something new on the phone, then the problem repeats.