Cross-browser tracking vulnerablity in Tor, Safari, Chrome and Firefox - FingerprintJS
fingerprintjs.com
The FingerprintJS team has uncovered a scheme flooding vulnerability. We explain how the exploit works across four major desktop browsers and show why it's a threat to anonymous browsing.

I remember this being talked about a month ago, but I never saw any patch notes stating that it had been patched.

Is this still a concern?