"Clear History and Website Data" did not clear the history. The issue was addressed with improved data deletion. This issue is fixed in macOS Catalina 10.15. A user may be unable to delete browsing history items.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-8768.json"
[ { "events": [ { "introduced": "0" }, { "fixed": "10.15" } ] } ]