Disable bookmark backups (easy fix) (!)
Tor browser shouldn't backup bookmarks at all and even when bookmarks are deleted, old backups remain in:
/Browser/TorBrowser/Data/Browser/profile.default/bookmarkbackups
Tor browser shouldn't backup bookmarks at all and even when bookmarks are deleted, old backups remain in:
/Browser/TorBrowser/Data/Browser/profile.default/bookmarkbackups