Note that some bookmark or history drop-down lists have a recent header and in that case you only see a limited number of items and not the full list (this list is the result of a query).

You can drag the Bookmarks Menu button that shows the bookmarks in a drop-down list from the Customize palette to the Navigation Toolbar. This Bookmarks Menu button has a "View bookmarks sidebar" menu item.

See "How do I add the Bookmarks Menu button to the toolbar?"

• https://support.mozilla.org/en-US/kb/bookmarks-firefox

You can toggle the bookmarks sidebar with the "Ctrl+B" shortcut.

• https://support.mozilla.org/en-US/kb/use-firefox-sidebar-access-bookmarks-history-synced

That didn't work, unfortunately. It's as if some of my bookmarks have been removed. Only the oldest and newest ones are showing. Specifically, the middle 46 are missing and whenever I add a bookmark, one from the middle (chronologically) disappears as mentioned before. When I go to "search bookmarks" I can find the missing ones although they aren't displayed in any list.

They might have been displaced, so maybe do a search and use "Show in folder".

In Firefox 96+ you can right-click a bookmark search/query result and click "Show in Folder" to locate this bookmark in the folder list.

Ok, they seem to be all there. Now if there was only a way to organize them. They're all sorted in chunks under different headings like bookmarks toolbar, other bookmarks, mobile bookmarks, etc. Ideally, I'd like to sort them in one list in the order they were added. Thanks!

You can drag the bookmarks to the folder where you want to have them appear or use Cut/Paste.

• https://support.mozilla.org/en-US/kb/sort-bookmarks-quickly-find-ones-you-want
• https://support.mozilla.org/en-US/kb/bookmark-folders-organize-your-bookmarks