I have the same issues/annoyances as you. Also, for the past few weeks, I set up a few Linux desktops. When you install Firefox Quantum alongside with the pre-

I have the same issues/annoyances as you. Also, for the past few weeks, I set up a few Linux desktops. When you install Firefox Quantum alongside with the pre-installed Firefox ESR (most of mainstream distros has it) and enable sync, your bookmarks will have a higher chance of being incorrectly synced and your history (if you chose to sync it) will probably be at FIREFOX_PROFILE_DIR/places.sqlite.corrupt A simple fix is to close Firefox and $ cd ~/.mozilla/firefox/YOUR_PROFILE $ mv places.sqlite.corrupt places.sqlite I'm still trying to find the time to prepare a proper bug report.