This is the relevant bug report: https://bugzilla.mozilla.org/show_bug.cgi?id=734643
Apparently, it has something to do with the UI rendering the selected items, and not with the database.
Apparently, it has something to do with the UI rendering the selected items, and not with the database.
Is the this 'Library' window a dead component? Besides this nearly decade-old bug, it still doesn't get themed like the rest of firefox either; dark mode doesn't effect it.