I've just upgraded to Ubuntu 24.04 which came with FF 129.0.2. I had a backup of my bookmarks which I imported from an HTML file, and now they're a complete mess. :( When I go to Manage Bookmarks, it shows they were imported in separate folders, in a certain order, but the folders are not showing when I expand the Bookmarks menu, nor do all the bookmarks. In small letters above it says "Recent bookmarks" followed by a mix of bookmarks from different folders; and not all the bookmarks are there. I have no idea how to troubleshoot this