I can't get the bookmark menu back on the screen after update. The drop down only stays on the screen long enough to select one. I have to keep pulling it down after each selection. Some of the bookmarks do not appear on the list. That makes it very slow to check a list of bookmarks. I can't get the bookmark menu on the left side of the screen at all.
Open the Bookmarks Manager; Press the Alt or F10 key to bring up the toolbar, and select Bookmarks. Hot key is <Control> (Mac=<Command>) <Shift> B. Firefox 84+ <Control> (Mac=<Command>) <Shift> O.
Then work from here.
You can set browser.bookmarks.openInTabClosesMenu = false on the about:config page to keep the menu open and possibly open more bookmarks.
You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".
If you use Sync then best is to disconnect Sync temporarily during troubleshooting.
This can be caused by a problem with the places.sqlite and favicons.sqlite databases in the Firefox profile folder.
- use "Verify Integrity" button on the "Help -> More Troubleshooting Information" (about:support) page
If errors are reported with "Verify Integrity", close and restart Firefox or reboot and retry.
If "Verify Integrity" cannot repair places.sqlite, rename/remove all places.sqlite and favicons.sqlite files in the Firefox profile folder with Firefox closed. Firefox will rebuild places.sqlite and restore the bookmarks from a recent JSON backup in the bookmarkbackups folder.
- keep a backup copy of places.sqlite in case a new places.sqlite database has to be created
You lose the history when a new places.sqlite is created.
You can use the button on the "Help -> More Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.
- Help -> More Troubleshooting Information -> Profile Folder/Directory:
Windows: Open Folder; Linux: Open Directory; Mac: Show in Finder