After all my Firefoxes updated to 56 and Xmarks updated to the new 4.5 version, a big issue has appeared: all the separators are gone!
I use (or now, used to as they are gone) separators to group bookmarks inside each folder. I have not too many folders but lots of little groupings.
But now, separators are gone. They get removed when resyncing bookmarks, and they are definitely not present on the server.
This is very annoying. When will xmarks start syncing separators again?